coefficient unit常数部件,系数部件,系数组coefficientn.系数coefficient of horizontal pressure侧压系数Coefficient of ecological rucksack生态包袱系数Coefficient of adhesion in braking制动粘着系数coefficient of molecular diffusion分子扩散系数coefficient of group-pile effect群桩效应系数coefficient of saturation recovery恢复饱和系数coefficient of kinematic viscosity运动粘度; 运动粘性系数coefficient of tractive resistance牵引阻力系数coefficient of recovery saturation恢复饱和系数coefficient variation of the yield产量变异种子