1、吸声材料（结构）吸声系数表（1） 纤维材料及制品（未注明皆为驻波管值）下述频率/（Hz）的吸声系数材料（结构）名称厚度/kg体积密度/（kg/m 2） 125 250 500 1000 2000 4000备注木丝板木丝：长80mm,厚 0.5mm,宽 5mm左右555552003004005006000.050.090.140.160.180.090.150.240.270.260.310.480.650.670.690.590.690.780.760.790.710.790.870.860.850.840.800.910.880.93木丝板木丝：长80mm,厚 0.3mm,宽 2mm左右55
2、5552003004005006000.070.100.160.130.180.100.170.220.250.270.320.500.700.720.740.570.700.820.790.800.770.800.870.840.850.840.810.910.880.93木丝板木丝：长80mm,厚 0.5mm,宽 2mm左右1.52.557.5104004004004004000.030.080.140.210.320.050.200.250.390.600.150.300.630.850.900.190.660.760.830.900.500.710.870.890.920.760.88
3、0.900.910.90贴实 1.5 470 0.05 0.15 0.30 0.50 0.35 0.55后空30mm 1.5 470 0.10 0.10 0.20 0.55 0.60 0.65后空120mm 1.5 470 0.10 0.25 0.45 0.35 0.45 0.65大空腔 1.5 470 0.25 0.30 0.40 0.50 0.50 0.50贴实 2.5 470 0.05 0.15 0.30 0.50 0.70 0.65后空50mm 2.5 470 0.20 0.20 0.50 0.45 0.55 0.65水泥、木丝板（表面喷薄浆）大空腔 2.5 470 0.20 0.30
4、 0.40 0.60 0.65 0.50半穿孔软枝木纤维板软枝木纤维板厚板材软枝木纤维板半穿孔软枝木纤维板1.31.31.93803800.040.080.100.170.280.100.150.190.450.100.220.250.460.120.320.500.470.300.410.650.540.330.460.70混响室软质木纤维板贴钛白纸，后空50mm,孔深9mm 中6mm 1.3 320 0.25 0.35 0.30 0.40 0.45 0.60 混响室距20,mm 3mm 1.3 320 0.25 0.35 0.35 0.35 0.35 0.40 混响室海草（外包麻布）海草（
5、外包麻布）海草（外包麻布）海草（外包麻布）海草（外包麻布）123451001001001001000.100.100.100.090.100.100.090.140.120.190.140.120.170.270.500.250.420.650.830.940.770.930.760.720.850.860.780.980.920.86麻绒（外包玻璃丝布）贴实5554050600.240.270.300.580.681.011.051.101.231.201.211.211.031.001.000.961.031.11混响室混响室混响室麻绒（外包玻璃丝布）后空100mm505050405060
6、0.460.460.501.041.021.041.151.211.171.061.041.091.001.041.110.931.031.11混响室混响室混响室麻绒（外包玻璃丝布）贴实1001001004050600.700.630.841.101.031.081.241.221.231.161.111.031.071.081.050.900.890.95混响室混响室混响室麻绒（外包玻璃丝布）后空10mm1001001004050601.061.151.181.151.061.161.161.061.091.101.101.071.021.031.000.910.950.91混响室混响室混响
7、室棉絮 25 10 0.03 0.07 0.15 0.30 0.62 0.60毛毡151520233045224466881508037023080801601601601600.030.040.070.070.040.080.040.090.180.330.060.060.260.170.170.340.080.250.470.690.170.140.420.320.560.680.210.610.830.840.420.360.400.450.650.650.510.950.920.870.650.630.550.560.810.830.940.920.920.940.730.920.56
8、0.690.910.88超细玻璃棉507090100150502020202020250.150.220.320.250.500.150.350.550.800.600.800.290.850.890.730.850.850.850.850.810.780.870.850.830.860.930.860.870.860.870.860.84-0.850.80-70909090505050252515301217240.230.320.250.280.060.060.100.670.850.850.570.100.190.300.800.700.840.540.680.710.850.770.8
9、00.820.700.980.980.850.860.890.910.820.930.610.85-0.900.900.85超细玻璃棉2020403020200.030.050.050.040.100.100.290.300.500.800.650.850.790.650.700.790.650.65混响室混响室混响室树脂玻璃棉板，树脂含量 5%9%，纤维直径1315m30501001001001000.060.090.300.110.260.660.260.600.900.560.920.910.930.980.980.970.990.99防水超细玻璃棉毡5010020200.110.250
10、.300.940.780.930.910.900.930.96-沥青玻璃棉毡，沥青含量 2%5%，纤维直径1315m5050501001502000.090.110.140.240.330.420.550.650.680.930.910.800.980.960.880.980.980.94树脂玻璃棉板，树脂含量 5%9%，纤维直径1315m505050505050100150200561101560.090.130.200.080.110.120.260.390.460.200.310.330.600.680.690.440.670.640.940.900.780.810.940.890.98
11、0.920.910.920.950.920.990.990.930.970.980.98沥青玻璃棉毡纤维直径13.6m19.0m30.0m42.0m50505050707070700.080.080.080.080.260.190.130.110.490.370.230.190.870.730.420.340.970.900.600.500.970.890.690.6360 240 0.25 0.55 0.78 0.75 0.87 0.91 北京产70 200 0.32 0.63 0.76 0.83 0.90 0.92 北京产80 150 0.30 0.64 0.73 0.78 0.93 0.
12、94 北京产80 240 0.35 0.65 0.65 0.75 0.88 0.92 北京产80 300 0.35 0.43 0.55 0.67 0.78 0.92 北京产50 150 0.18 0.44 0.75 0.81 0.87 -70 150 0.32 0.54 0.69 0.75 0.87 - 太原产90 150 0.44 0.59 0.67 0.77 0.85 - 太原产50 200 0.21 0.42 0.56 0.70 0.80 - 太原产70 200 0.30 0.45 0.68 0.72 0.83 - 太原产矿渣棉90 200 0.33 0.42 0.58 0.70 0.8
13、8 - 太原产酚醛矿棉毡 40 60 0.07 0.15 0.38 0.76 0.98 -506040506060608080800.090.120.070.110.110.220.300.170.280.320.540.660.420.640.660.890.950.830.890.900.990.950.990.920.97-晴纶棉 50 20 0.14 0.37 0.68 0.75 0.78 0.82沥青矿棉毡1530602002002000.100.080.190.090.170.510.180.500.670.400.680.680.790.810.850.920.890.86岩棉吸
14、声板 LYB-00-80 体积密度80km/m3030303030051015200.160.250.340.540.780.180.620.790.960.940.620.931.051.101.090.931.081.100.970.961.091.061.051.101.051.021.061.061.051.09北新建材（集团）有限公司（混响室）岩棉吸声板 LYB-00-100 体积密度100km/m33030303030051015200.170.280.500.730.780.300.640.860.870.900.761.011.071.081.061.081.141.020.9
15、61.061.051.081.031.001.021.050.991.041.111.11同上岩棉吸声板 LYB-00-120 体积密度120km/m33030303030051015200.200.320.630.810.820.300.700.750.960.990.770.951.030.960.950.991.100.950.961.031.091.001.061.071.100.950.991.091.071.11同上岩棉吸声板 LYB-00-80 体积密度80km/m35050505050051015200.260.390.690.771.000.590.870.990.970.9
16、31.071.111.101.151.031.231.261.001.081.111.081.151.101.071.131.071.091.091.011.11同上岩棉吸声板 LYB-00-100 体积密度100km/m35050505050051015200.340.430.630.831.080.650.790.890.810.921.001.101.040.980.941.191.131.111.071.121.111.061.011.131.141.051.101.101.071.11同上岩棉吸声板 LYB-00-120 体积密度120km/m35050505050051015200
17、.350.550.660.860.980.650.710.870.880.811.180.941.010.920.951.131.091.051.151.031.111.071.071.141.111.101.141.151.201.07同上离心玻璃棉板体积密度 24kg/m3505050500510150.360.380.450.530.560.700.911.141.031.161.121.191.081.181.081.091.131.131.041.121.181.101.101.07河北（固安）宏远玻璃纤维50 20 0.64 1.22 1.17 1.12 1.09 1.13 制品厂
18、（混响室）离心玻璃棉板体积密度 32kg/m35050505050051015200.320.350.490.630.810.630.831.131.131.181.081.181.281.211.251.131.201.071.121.061.101.051.121.121.061.030.981.141.031.02同上离心玻璃棉板体积密度 40kg/m35050505050051015200.370.530.630.991.100.610.981.161.161.221.061.191.211.251.311.291.171.111.131.131.051.131.131.101.141
19、.061.071.071.091.10同上离心玻璃棉板体积密度 48kg/m35050505050051015200.400.500.550.780.910.711.001.121.021.051.081.201.301.261.061.291.131.071.071.171.100.981.051.041.051.031.061.191.161.18同上离心玻璃棉板体积密度32kg/m3（表面涂黑色胶）2525252525051015200.130.150.280.400.440.320.470.770.991.090.680.881.101.101.030.861.051.060.880.
20、871.051.031.021.021.010.950.950.970.970.97混响室混响室混响室混响室混响室离心玻璃棉板体积密度32kg/m3（表面涂黑色胶）3030303030051015200.130.240.390.670.900.410.610.931.131.050.761.061.071.000.901.061.040.840.740.901.030.800.910.870.910.760.850.840.810.85混响室混响室混响室混响室混响室离心玻璃棉板体积密度32kg/m3（表面为复合牛皮纸加筋铝箔）3030303030051015200.220.320.760.90
21、1.160.470.610.770.810.841.031.140.920.850.740.980.850.670.630.760.610.530.610.750.580.460.400.430.390.39混响室混响室混响室混响室混响室离心玻璃棉复合PVC 面层天花板（PVC 天花板）体积密度 48kg/m31515151515051015200.080.200.350.690.840.290.990.840.770.700.540.760.720.710.700.910.990.910.730.840.940.770.810.810.800.570.560.610.570.57混响室混响室
22、混响室混响室混响室风管包扎玻璃棉毡体积密度 48kg/m33838383838051015200.290.340.720.961.110.721.100.990.770.861.151.011.000.890.840.910.940.960.930.970.670.670.640.630.660.220.290.330.190.27混响室混响室混响室混响室混响室玻璃棉吸声天花 15 0 0.09 0.29 0.53 0.77 0.53 0.23 混响室板（表面贴PVC）体积密度48kg/m31515151551015200.290.300.520.960.940.760.570.610.590
23、.480.430.370.810.750.720.680.430.420.380.430.210.190.090.09混响室混响室混响室混响室离心玻璃棉毡体积密度 16kg/m35050505050051015200.170.190.230.410.570.460.660.881.031.080.911.061.151.161.091.091.121.111.011.121.141.101.121.121.100.951.031.011.020.94混响室混响室混响室混响室混响室离心玻璃棉毡表面为复合玻璃布铝箔体积密度16kg/m35050505050051015200.450.380.520
24、.770.870.730.820.951.181.021.101.020.870.760.600.630.540.460.580.640.330.370.360.400.380.260.260.270.280.28混响室混响室混响室混响室混响室无贴面吸声玻璃棉毡体积密度16kg/m3100100100100100051015200.360.610.710.770.870.950.971.111.141.191.151.211.201.201.161.131.211.111.171.141.191.101.071.091.061.101.061.101.041.03混响室混响室混响室混响室混响室
25、离心玻璃棉毡（表面涂黑色）积密度 24kg/m32525252525051015200.120.180.180.260.360.330.460.650.820.900.640.770.950.950.920.830.960.920.760.770.920.910.880.960.910.880.860.910.910.94混响室混响室混响室混响室混响室离心玻璃棉毡体积密度 24kg/m37575757575051015200.400.550.911.061.291.061.041.060.940.981.231.361.211.121.141.171.181.121.121.131.111.1
26、21.071.041.081.091.061.121.021.06混响室混响室混响室混响室混响室矿棉装饰吸声板规格：600x300x13(mm)品种：滚花1313131313051015200.090.380.530.781.130.140.700.850.760.900.420.890.710.770.690.910.830.760.650.700.950.860.920.900.870.840.820.900.910.90山东淄博富圆装饰材料有限公司（混响室）矿棉装饰吸声板规格：600x600x13(mm)品种：滚花1313131313051015200.060.320.510.740.9
27、10.190.720.780.730.720.440.880.810.740.740.840.790.790.680.720.950.910.900.900.880.900.910.910.900.98同上矿棉装饰吸声板规格：1200x600x12(mm)12121205100.090.470.800.140.690.510.580.590.560.760.590.550.760.710.750.790.790.86北京建材制品总厂品种：滚花 121215200.981.160.520.510.450.520.540.610.710.720.800.84（混响室）矿棉装饰吸声板规格：600x6
28、00x12(mm)品种：滚花1212121212051015200.070.300.920.950.870.160.620.430.440.440.570.510.430.480.440.690.560.540.530.590.750.680.670.730.740.710.830.750.750.71北新建材（集团）有限公司（混响室）矿棉装饰吸声板规格：500x500x10(mm)品种：滚花1010101010051015200.080.390.630.780.840.200.590.480.570.480.580.610.480.420.510.730.560.560.580.530.68
29、0.730.740.730.740.730.690.820.750.81山东昌乐县岩棉吸声板厂（混响室）（2） 颗粒吸声制品（未注明皆为驻波管值）下述频率/（Hz）的吸声系数材料（结构）名称厚度/kg体积密度/（kg/m 2） 125 250 500 1000 2000 4000备注矿渣膨胀珍珠岩吸声砖石膏勾缝未勾缝1101107008007008000.430.500.500.560.510.610.530.500.690.690.810.89混响室混响室膨胀珍珠岩自然堆放 40 106 0.10 0.15 0.65 0.70 0.80 0.90 混响室膨胀珍珠岩装饰吸声板 10 360 0
30、.09 0.16 0.26 0.36 0.54 0.80膨胀珍珠岩吸声板35302803102803100.230.290.420.460.830.920.930.980.740.840.830.63混响室混响室膨胀珍珠岩穿孔复合板（穿孔板加吸声板一次成型）2030402803102803102803100.020.050.160.110.190.280.260.480.810.650.820.760.740.620.730.720.740.60混响室混响室混响室水泥珍珠岩块 60 300 0.20 0.40 0.45 0.50 0.50 0.50膨胀珍珠岩吸声板18183203400.090
31、.100.130.210.380.320.670.370.660.47-陶土吸声砖305080100120125012501250125012500.060.110.180.270.330.100.260.550.690.750.300.590.620.640.560.760.550.560.650.630.560.600.580.610.56-陶粒吸声砖规格：400x185x115(mm)1151857807800.430.800.800.810.750.620.740.690.830.610.890.61混响室混响室贴实地面安装加气混凝土 90150 670500 0.080.08 0.1
32、00.14 0.100.19 0.190.28 0.270.34 0.200.45长石石英吸声砖 8090 15001500 0.160.18 0.330.41 0.350.40 0.360.35 0.340.38 -（3） 泡沫制品（未注明皆为驻波管值）下述频率/（Hz）的吸声系数材料（结构）名称厚度/kg体积密度/（kg/m 2） 125 250 500 1000 2000 4000备注后空/mmm0 25 250280 0.21 0.27 0.37 0.36 0.48 0.6950 25 250280 0.42 0.66 0.35 0.34 0.45 0.60100 25 250280
33、0.83 0.39 0.35 0.34 0.49 0.61150 25 250280 0.74 0.36 0.34 0.33 0.45 0.68吸声泡沫玻璃 200 25 250280 0.78 0.36 0.34 0.35 0.46 0.63广西东兰泡沫玻璃厂（混响室）聚胺酯泡沫塑料 2025 4343 0.030.08 0.080.24 0.150.60 0.300.93 0.501.07 0.501.04 混响室混响室聚胺酯泡沫塑料（聚醚）流阻率2.8x104 瑞利/m204060801000.040.070.100.150.210.070.130.190.290.430.110.240
34、.400.630.840.180.430.800.930.930.380.800.830.850.960.720.740.0.970.930.99聚胺酯泡沫塑料(聚酯型)30503050565671710.070.110.110.200.160.310.210.320.410.910.710.700.870.750.650.620.750.860.640.680.720.810.650.65聚胺酯泡沫塑料(聚酯型) 流阻率3x105 瑞利/m22471000.060.200.430.100.360.540.230.660.730.650.640.660.640.660.66-聚氨酯泡沫塑料14
35、3151980.050.090.130.390.070.180.350.510.220.710.830.610.680.570.790.650.540.520.700.69-聚酯氨泡沫塑料4060804045450.100.110.200.180.250.400.360.520.950.700.870.900.750.790.980.800.810.85氨基甲酸泡沫塑料255025360.050.210.070.310.260.860.810.710.690.860.810.82微孔聚氨脂泡沫塑料 40 30 0.10 0.14 0.26 0.50 0.82 0.77粗孔聚氨脂泡沫 40 40
36、 0.06 0.10 0.20 0.59 0.88 0.85塑料尿醛米波罗3047502020200.100.220.220.170.290.290.450.400.400.670.680.680.650.950.950.850.940.94聚氨酯泡沫塑料外贴铝型纸 50 40 0.21 0.58 0.94 0.95 0.87 0.78贴实安装 10 26 0.04 0.08 0.13 0.31 0.62 0.94后空100mm 10 26 0.11 0.29 0.72 0.74 0.73 0.82贴实安装 25 26 0.05 0.17 0.49 0.94 1.13 1.05阻燃聚氨酯泡沫塑
37、料后空100mm 25 26 0.17 0.56 1.13 0.80 1.17 1.27（4） 穿孔板共振吸声结构（未注明皆为驻波管值）下述频率/（Hz）的吸声系数穿孔板结构 空腔距离 125 250 500 1000 2000 4000 备注穿孔三夹板孔径5mm 孔距 40mm100 不填100 板后贴布100 填矿棉0.040.280.690.540.690.730.290.510.510.090.210.280.110.160.190.190.230.17狭缝三夹板，L=50mm,缝距：水平 10mm;垂直20mm500 板后贴布500 填矿棉0.180.210.330.350.360.
38、400.360.430.350.420.330.39穿孔五夹板孔径8mm 孔距 50mm501001500.090.110.180.190.350.550.340.300.320.280.230.200.170.230.230.150.190.10穿孔五夹板孔径5mm 孔距 25mm5050 填矿棉100100 填矿棉0.010.230.100.200.250.690.450.950.550.660.480.610.300.470.180.320.160.260.190.230.190.270.250.55穿孔五夹板孔径8mm 孔距50mm，0.5kg/m 2玻璃棉，外包玻璃布50500150
39、0.200.330.340.670.550.610.610.550.520.370.420.350.270.260.270.270.270.19穿孔五夹板孔径8mm 孔距100mm，0.5kg/m2 玻璃棉，外包玻璃布501001500.220.310.340.450.420.400.330.320.290.200.260.270.180.170.170.200.200.18穿孔金属板孔径6mm 孔距100 填矿棉100 填玻璃棉0.320.310.760.371.01.00.951.00.901.00.981.055mm，空腔放棉毡外包玻璃布穿孔硬质纤维板，厚 4mm,孔径35mm,孔距7.
40、5mm 后放玻璃棉毡 40mm 体积密度 50kg/m34040 玻璃棉毡后再留100mm0.190.280.360.510.590.580.630.510.500.530.510.62石棉穿孔板板厚4mm 孔径 9mm穿孔率 1%空腔放超细棉 0.5kg/m3501001502002500.190.220.200.230.210.540.500.460.440.410.250.250.310.330.280.150.100.120.110.140.020.010.060.040.04-0.040.03石棉穿孔板板厚4mm 孔径 9mm穿孔率 2.5%空腔放超细棉0.5kg/m3 超细棉501
41、001502002500.130.230.300.260.240.500.610.540.540.520.630.500.450.480.430.320.360.360.340.340.140.160.180.160.130.030.030.100.070.03石棉穿孔板板厚4mm 孔径 9mm穿孔率 5%空腔放超细棉 0.5kg/m3超细棉501001502002500.070.190.260.270.260.380.560.520.500.500.600.570.480.460.480.410.480.480.250.430.280.260.310.330.310.070.070.110.
42、150.15石棉穿孔板板厚4mm 孔径 9mm穿孔率 10%空腔放超细棉0.5kg/m3 超细棉501001502002500.100.190.240.270.260.350.580.440.430.520.660.610.500.450.410.590.630.500.430.430.450.480.450.450.450.330.330.250.330.33石棉穿孔板板厚4mm 孔径 9mm穿孔率 14%空腔放超细棉0.5kg/m3 超细棉501001502002500.100.180.250.260.290.350.630.520.480.530.770.700.460.500.450.
43、700.660.550.530.430.590.550.550.550.530.390.330.450.450.46后空 100mm（空气层） 0.18 0.61 0.78 0.37 0.22 0.16后空 100mm（放晴纶棉，体积密度20kg/m3）0.39 0.99 0.83 0.41 0.26 0.19后空 200mm（放晴纶棉，体积密度20kg/m3）0.61 0.76 0.59 0.40 0.25 0.20后空 200mm（空气层） 0.46 0.64 0.54 0.32 0.22 0.15穿孔石膏板，穿孔率 6%，板厚7mm，板后贴一层薄纸同上去掉板后薄纸 0.13 0.20 0
44、.19 0.16 0.13 0.1550 0.08 0.18 0.39 0.19 0.13 0.1150 放 30mm 厚泡沫塑料 0.08 0.27 0.59 0.23 0.15 0.14钙塑板，孔径7mm，孔距25mm(390mmx390mm 面积上共196 孔50 放 30mm 厚超细棉 0.16 1.21 0.73 0.42 0.26 0.1550 放 30mm 厚泡沫塑料0.080.100.160.290.340.400.160.230.140.170.170.19钙塑板，孔径7mm，孔距25mm(390mmx390mm 的一半面积穿孔共 98 个50 放 30mm 厚超细棉 0.1
45、9 1.03 0.42 0.32 0.21 0.07后空 100 0.24 0.52 0.91 0.70 0.45 0.33木质纤维吸声板，板后贴玻璃布，板厚 4mm,穿孔率10% 后空 200 0.43 0.71 0.76 0.46 0.46 0.31下述频率/（Hz）的吸声系数复合穿孔吸声结构 125 250 500 1000 2000 4000 备注前五夹板 d=5mm,D=25mm,L=50mm后三夹板 d=5mm,D=40mm,L=100mm 0.83 0.50 0.68 0.41 0.22 0.25前三夹板 d=5mm,D=13mm,L=30mm后三夹板 d=5mm,D=40mm,
46、L=200mm 0.86 0.40 0.63 0.93 0.83 0.57前三夹板 d=5mm,D=13mm,L=30mm填矿棉：后五夹板d=5mm,D=35mm,L=200mm，贴布0.95 0.54 0.92 1.0 0.93 0.72前三夹板 d=5mm,D=13mm,L=50mm，贴布，后板不穿孔，L=100mm, 龙骨距500mmx450mm0.44 0.75 0.62 0.74 0.88 0.72下述频率/（Hz）的吸声系数 备注微穿孔板 穿孔率（%） 空腔距离/mm 125 250 500 1000 2000 4000单层微穿孔板,孔径 0.8mm,板厚0.8mm11111113
47、05070100150200250-0.05-0.240.370.560.720.180.290.400.710.850.980.990.640.870.860.960.870.610.380.690.780.370.400.200.860.400.170.120.140.290.150.270.12-驻波管单层微穿孔板,孔径 0.8mm,板厚0.8mm22222223050701001502002500.080.050.120.100.240.400.480.110.170.240.460.680.830.890.150.600.570.920.800.540.340.580.780.700
48、.310.100.770.450.400.220.170.400.120.280.11-驻波管单层微穿孔板,孔径 0.8mm,板厚333050-0.110.060.250.200.430.680.700.420.25- 驻波管0.8mm 3333370100150200250-0.120.210.220.350.220.290.470.500.700.820.780.720.500.760.690.400.120.280.500.210.780.200.550.15-双层微穿孔板,孔径 0.8mm,板厚0.9mm2.5+12.5+12.5+12.5+12.5+12+13+1D1=30，D 2=
49、70D1=40，D 2=60D1=50，D 2=50D1=40，D 2=160D1=80，D 2=120D1=80，D 2=120D1=80，D 2=1200.260.210.180.58-0.480.400.710.720.690.990.880.970.920.920.940.960.540.840.930.950.650.840.990.860.800.640.660.350.300.24-0.150.17-驻波管单层微穿孔板,孔径 0.8mm,板厚0.5mm122002000.370.220.530.310.440.390.290.240.260.310.180.27单层微穿孔板,孔径 0.8mm,板厚0.8mm1222001502000.280.180.190.670.430.500.520.870.450.420.320.350.400.330.360.300.340.19双层微穿孔板,孔径 0.8mm,板厚0.8mm2+12+12+1D1=100，D 2=100D1=50，D 2=100D1=80，D 2=1200.280.250.410.790.790.910.700.670.610.640.
