emergency stop cock 紧急制动阀 ; 应急关断开关 ; 紧急制动旋塞
cast iron stop cock 铸铁止水阀
gas stop cock 停气旋塞
kelly stop cock 方钻杆回流阀
steam stop cock 截汽旋塞
stop-cock grease 活栓润滑脂
three-way stop cock 三路活栓 ; 三路栓
plastic three-way stop cock 塑料三通旋塞
N-COUNT A stopcock is a faucet on a pipe, which you turn in order to allow something to pass through the pipe or to stop it from passing through. 管闩; 旋塞阀
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