Multiple-outlet pipe of varying orifice size has been used to pipe in micro-irrigation system very often.

变孔径多孔管道是微灌系统中常用的一种灌水管道。

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Multiple-outlet pipe of varying orifice size has been used to pipe in micro-irrigation system very often.

变孔径多孔管道是微灌系统中常用的一种灌水管道。

youdao