压缩空气的分配管道系统无例外地都是用焊接管件的铜管。

Air distribution piping systems almost invariably use soft copper tubing with soldered fittings.

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以压缩空气为输送介质，粒径相同而密度不同的小米和空心玻璃珠为输送物料，在水平变角度Y型分支管气力输送试验台上对气固两相的流量分配特性进行了研究。

By using compressed air as conveyance power and millet as a transport medium in horizontal Y-shaped branch pipes, the solid flow distribution characteristics of the above pipes were studied.

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