单词	recall signal
释义	recall signal 回叫信号
随便看	double action piston double-action piston double action press double-action press double action pressing double-action pressing double action pump double-action pump double-action revolver double action rod pump double-actions double action skull forceps double-action skull forceps double action spring bolt double-action trigger mechanism double-action vane pump double-action vane secondary component double-action variable displacement motor double-action variable displacement pump double activity double-actng valve double act of communication double acts double-acts double-actuation