1、n body problem n 体问题nacelle 发动机短舱naive model 简单模型naked hull 裸船体nano 那narrow band frequency 窄带频率narrow band frequency modulation 窄带档narrow band noise 窄带噪声natural ageing 自然时效natural angle of repose 静止角natural angular frequency 固有角频率natural circulation 自然循环natural convection 自然对流natural convection air
2、cooler 自然对琳气冷却器natural cooling 自然冷却natural draught 自然通风natural equation 内蕴方程natural frequency 本盏率natural impedance 特性浪涌阻抗natural law 自然律natural logarithm 自然对数natural mode 固有模式natural oscillation 固有振荡natural parallelism 自然平行性natural period 固有周期natural resonance 固有共振natural rigidity 固有刚性natural rollin
3、g 自然横摇natural scattering 自然散射natural system of coordinates 自然坐标系natural trajectory 固有轨迹natural velocity 固有速度natural ventilation 自然通风natural vibration 固有振动natural vibrational coordinates 固有振动坐标natural wave 自然波natural wavelength 固有波长natural wind 自然风nature 性质navier method 纳维法navier stokes equations 纳维
4、斯托克斯方程navier stokes fluid 纳维 斯托克斯铃navigation 导航navigation satellite 导航卫星neap tide 小潮near earthquake 近震near field 近场near surface flow 表面流近面流nearly circular orbit 近圆轨道necessary condition 必要条件necking 细颈现象necking in tension 断口收缩needle nozzle 针形喷嘴negative acceleration 负加速度negative buoyancy 负浮力negative fe
5、edback 负反馈negative image 负像negative impedance 负阻抗negative impulse 负脉冲negative pressure 负压negative pressure wave 反向波negative refraction 负折射negative rotation 逆时针旋转negative viscosity 负粘度negativity wave 负性波neo hookean element 新虎克元neo hookean form 新虎克形式neo hookean material 新虎克材料net force 净力net head 有效落差n
6、et of slip lines 滑移线网net plane 点阵平面net torque 净转矩net velocity 净速度net weight 净重network 网络network structure 网络结构neumann potential 诺埃曼势neumann problem 诺埃曼问题neutral axis 中性轴neutral cross section 中性截面neutral drag 中性阻力neutral equilibrium 中性平衡neutral layer 中性面neutral line 中性线neutral plane 中性面neutral point
7、中性点neutral potential 中性势neutral stability 中立稳定neutral surface 中性面neutralization heat 中和热neutropause 中性层顶neutrosphere 中性层newcomb precession constant 纽科姆旋进常数newton 牛顿newton axioms 牛顿公理newton cosmology 牛顿宇宙论newton diagram 牛顿图newton euler equations 牛顿 欧拉方程newton first law 牛顿第一定律newton interpolation form
8、ula 牛顿内插公式newton law for heat loss 牛顿热耗定律newton law of cooling 牛顿冷却定律newton law of friction 牛顿摩擦定律newton law of gravitation 牛顿引力定律newton law of inertia 牛顿惯性定律newton law of resistance 牛顿阻力定律newton law of similarity 牛顿相似性定律newton law of viscosity 牛顿粘性定律newton laws 牛顿公理newton method 牛顿法newton number 牛顿
9、数newton potential 牛顿势newton raphson method 牛顿 拉夫逊算法newton ring 牛顿环newton second law 牛顿第二定律newton similarity number 牛顿相似数newton third law 牛顿第三定律newtons impact theory 牛顿撞豁论newtonian absolute time 牛顿绝对时间newtonian attraction 牛顿引力newtonian dynamics 牛顿动力学newtonian field of force 牛顿力场newtonian flow 牛顿怜newt
10、onian fluid 牛顿铃newtonian gas 牛顿气体newtonian liquid 牛顿铃newtonian mechanics 牛顿力学newtonian motion 牛顿运动newtonian principle of relativity 牛顿相对性原理newtonian viscosity 牛顿粘度nick bend test 凹口断裂试验nick break test 凹口断裂试验nikuradse diagram 尼古拉兹图nil ductility 无延性no slip condition 无滑刘件noble gas 稀有气体nodal distance 节点距
11、离nodal frequency 节点频率nodal generalized force 节点广义力nodal line 节点线nodal loads 节点荷载nodal point 节点nodal potential 节点势nodal shift 节点移位nodal shifting method 节点移位法nodal surface 节面node 节结点node of longitudinal wave 纵波波节node of the acoustic wave 声波波节noise 噪声noise amplitude 噪声幅度noise audiogram 噪声波形图noise chara
12、cteristic 噪声特性noise energy 噪声能量noise equivalent power 噪声等效功率noise factor 噪声因数noise filter 噪声滤波器noise level 噪声级noise meter 噪声计noise power 噪声功率nominal horsepower 标称马力nominal load 标称负载nominal output 标称输出nominal size 标称尺寸nominal stress 公称应力nominal value 公称值nomogram 列线图nomography 算图法non central potential
13、 非有心力势non deformable 不可变形的non equilibrium flow 非平衡怜non euclidean motion 非欧几里得运动non linear elasticity 非线性弹性学non newtonian flow 非牛顿怜non newtonian liquid 非牛顿液体non newtonian motion 非牛顿运动non oscillatory 不振荡的non periodic 非周期的non reversible 不可逆的nonaccelerated 无加速度的nonageing 非老化性nonageing steel 无时效钢nonaxial
14、 collision 非轴向碰撞noncentral force 非中心力noncentral moment 概约矩noncoherence 非相干性nonconcentrated 非集中的nonconservative force 非守恒力noncontinuous 不连续的noncontinuous surface 不连续表面noncontinuum flow 不连续流nondestructive testing 非破坏试验nondimensional 无量纲的nondimensional coefficient 无因次系数nondimensional number 无量纲量nondime
15、nsional parameter 无量纲参数nondimensional quantity 无量纲量nondirective 非定向的nondispersive wave 非弥散波nonelastic 非弹性的nonelastic buckling 非弹性屈曲nonelastic scattering 非弹性散射nonequilibrium 非平衡nonequilibrium plasma 非平衡等离子体nonequilibrium process 非平衡过程nonequilibrium state 非平衡态nonequilibrium surface tension 非平衡表面张力none
16、quilibrium thermodynamics 非平衡态热力学nonevanescent wave 无阻尼波nonfree point 非自由质点nongeostrophic flow 非地转怜nonholonomic constraint 非完整约束nonholonomic system 非完整系统nonholonomic velocity coordinate 非完整速度坐标nonhomogeneous boundary 非齐次边界nonideal flow 非理想怜noninertia 无惯性noninertial system 非惯性系noninertial system of c
17、oordinates 非惯性坐标系nonisentropic flow 非等熵怜nonisotropic material 非蛤同性材料nonisotropy 非蛤同性nonius 游标nonlinear 非线性的nonlinear aerodynamics 非线性空气动力学nonlinear distortion 非线性失真nonlinear electrodynamics 非线性电动力学nonlinear equation 非线性方程nonlinear mechanics 非线性力学nonlinear operator 非线性算符nonlinear oscillation 非线性振荡non
18、linear oscillator 非线性振子nonlinear programming 非线性规划nonlinear resonance 非线性谐振nonlinear spring 非线性弹簧nonlinear stress strain relation 非线性应力应变关系nonlinear system 非线性系nonlinear theory 非线性理论nonlinear theory of elasticity 非线性弹性理论nonlinear vibration 非线性振动nonlinear viscoelasticity 非线性粘弹性nonlinear wave 非线性波nonl
19、inearity 非线性nonlinearly viscous fluid 非线性粘滞铃nonlocal continuum mechanics 非局部连续介质力学nonmobility 不动性nonmomental theory of shell 壳体无矩理论nonmoving 不动的nonpenetrating 非穿透的nonperiodic 非周期性的nonplastic fracture 脆性断裂nonpolar 非极性的nonporous 无孔的nonpotential force 非势力nonreversibility 不可逆性nonreversible cycle 不可逆循环no
20、nrotational field 无旋场nonslipping 无滑动的nonsmooth mechanics 非光滑力学nonstatic process 非静态过程nonstationary flow 非定常流nonstationary motion 不稳定运动nonsteady behavior 不稳定行为nonsteady flow 非恒稳怜nonsteady state 不稳定态nonstop flight 不着陆飞行nonsymmetry 非对称nonsynchronous whirl 非同步涡动nonuniform flow 非均匀流不等速流nonuniform motion
21、非均匀运动nonuniform strain 非均匀应变nonuniformity 不均匀性nonvariant system 不变系nonvarying constraint 不变约束nonviscous 非粘性的nonviscous instability 非粘性粱稳定性norm 标准normal acceleration 法向加速度normal component 法向分量normal coordinates 简正坐标normal density 标准密度normal distribution 正态分布normal equation 正规方程normal force 法向力normal
22、frequency 标准频率normal frequency spectrum 标准频率谱normal load 正常负载normal mode 正常模式normal plane 法面normal pressure 标准压力normal section 正截面normal shock 正激normal slope 正常坡度normal state 标准状态normal strain 法向应变normal stress 法向应力normal temperature 标准温度normal vector 法向矢量normal vibration 简正振动normalization 归一化nose 头
23、部nose over 拿大顶notch 切口notch bending test 切口弯曲试验notch brittleness 切口脆性notch depth 切口深度notch effect 切口效应notch factor 切口因数notch impact strength 切口冲豢度notch sensitivity 切口灵敏度notch toughness 切口韧性notched bar impact test 凹口冲辉验notched bar tensile test 切口抗拉试验notched specimen 切口试样nozzle 喷口nozzle blade 喷嘴环叶片noz
24、zle body 喷嘴管nozzle efficiency 喷嘴效率nozzle flow 喷管流nozzle throat 喷嘴喉部nuclear explosion 核爆炸null method 零点法null plane 零位面nullification 无效number of degress of freedom 自由度数numerical analysis 数值分析numerical calculation 数值计算numerical integration 数值积分numerical solution 数值解nusselt number 努塞尔特数nutation 章动nutation cone 章动锥nutation constant 章动常数nutation frequency 章动频率nutation in longitude 黄经章动nutation of gyroscope 陀螺章动nutational angle 章动角nutational ellipse 章动椭圆nyquist diagram 奈奎斯特图nyquist frequency 奈奎斯特频率
