double-plug diode 双接头二极管

double-plug 双栓塞

double plug synapse 双插头式突触

hydraulic double plug 水压式双栓塞

double plug cement head 双级注水泥器

double-end plug gauge 双端塞规

Ignition plug with double spark 双极火花塞

double-end spark plug wrench 双头火花塞扳手

double spark plug ignition 双火星塞点火

double-contact plug 二芯塞子