单词	阀缸
释义	阀缸 fá gāng valve barrel
随便看	derivative of high order derivative of vector derivative on the left derivative on the right derivative operator derivative order derivative (pareto) derivative polarogram derivative polarography derivative product derivative-proportional-integral control derivative random process derivative regulator derivative rights derivative rock derivatives derivative sensing method derivatives of higher order derivative spectrophotometry derivative spectrum derivatives-- resistance derivatives; resistance derivatives-- stability derivatives; stability derivative structure