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1.The machine has a loose hubbed flange that can be adjusted to fit different sizes of pipes.
这台机器有一个可调节的松紧套筒法兰，可以适应不同尺寸的管道。
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2. The engineer used a loose hubbed flange to connect the two pieces of metal together.
工程师使用一个松紧套筒法兰将两块金属连接在一起。
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3.The loose hubbed flange was designed to allow for easy installation and removal of the pipe.
松紧套筒法兰的设计是为了便于安装和拆卸管道。