因为它们不使用工具进行连接和密封，有时候这些接头称为手紧接头。
These connections are sometimes referred to as "hand-tights" because they are designed to be connected and sealed without the use of tools.
先将氧气橡皮管紧接在氧气接头上，使焊炬接通氧气。
First connect the oxygen latex duct with the oxygen joint so that the welding torch can be supplied with oxygen.
发动机是提供动力的组件，一般装在汽车的前面，紧接着离合器、变速器、传动轴、万向接头、差速器、后车轴等等。
The engine acts as the power unit located normally at the front of the car, followed immediately by a clutch, gear box, propeller shaft, universal joint , differential, back axle, etc.
发动机是提供动力的组件，一般装在汽车的前面，紧接着离合器、变速器、传动轴、万向接头、差速器、后车轴等等。
The engine acts as the power unit located normally at the front of the car, followed immediately by a clutch, gear box, propeller shaft, universal joint , differential, back axle, etc.
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