A typical connection consists of three or four parts depending on whether it is a bullet-nose or a gasketed connection.
根据它是弹头接头还是衬垫接头，一个典型的接头由三个或四个零件组成。
Gasketed connections do not mechanically bond the valve and connection with the same force as bullet-nose connections.
衬垫接头把阀门和接头机械地连接在一起的力比弹头接头的力小。
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