coefficient tape系数带coefficientn.系数coefficient of chemical resistant耐化学侵蚀系数coefficient of turbulent transfer湍流转移系数coefficient of association duties按系数课征的关税coefficient of cubical elasticity体积弹性系数coefficient of thermal efficiency热效率系数coefficient of apparent expansion[物]表观膨胀系数coefficient of self-oscillation自振动系数coefficient of phase displacement相移系数coefficient demanding consumption消费支出弹性coefficient of standard deviation标准差系数