第二位力系数  second virial coefficient

二阶位系数  second-order potential coefficients

地球引力位系数  Geopotential coefficient

变系数二阶线性微分方程  second order linear differential equation with var

第二阶数位  second order digit

二阶NLO系数  Second-order NLO coefficient

2阶位系数  second-degree harmonic coefficients

系数阶数  order of coefficients

牵引力系数  coefficient of traction

引力系数  attrac-tion force coefficient

四分位数系数  quartile coefficient

变系数二元线性差分方程  variable linear difference equation with variable coefficients

第二Grneisen系数  the second Grneisen parameter

定常二阶力  added masses

多阶二位编码方式  encoding scheme; multilevel binary

二阶Hamiltonian系统  second order Hamiltonian system

二阶Hamilton系统  second order Hamiltonian systems; second-order Hamilton systems; second-order Hamilton system; second order Hamiltionian systems; second-order Hamiltonian systems

二阶力  Second-order force

二阶数值微分  second-order numerical differentiation

二阶位移  second order displacement