The assembly shall consist of two positive seating check valves located between two resilient seated shutoffs with a hydraulically balanced bypass line and four test cocks .
这种总成应该由两个正向密封止回阀， 两边夹着两个弹性阀座关闭阀， 并配置一个液压平衡旁路管线和四个测试旋塞构成。
The general and the colonel glared sternly and significantly at one another, like two cocks preparing for a fight, seeking in vain for a symptom of cowardice.
将军和上校像两只准备格斗的公鸡，严肃地意味深长地怒目相视，白白地守候对方露出胆怯的神态。
He cocks his thumb at some laundry and two suits in the corner.
他竖起拇指指向墙角的衣物和两套西装。
He cocks his thumb at some laundry and two suits in the corner.
他竖起拇指指向墙角的衣物和两套西装。
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