电线保护管和输送腐蚀液体介质，超纯水设备用管等。
The electric wire tube protector and the transportation corrode the liquid medium, the ultra pure water equipment uses the tube and so on.
同时请记住，有一个工具包的补丁和天然气充气连同备用管。
Remember also to have a toolkit with patches and gas inflator together with spare tubes.
这个系统包括两个送风机（其中一个备用）、空气管和氧化空气分布管。
The system consists of two air blowers (one of them as a common spare), air piping and grid distribution pipe.
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