Is there an effective system for assuring the quality of incoming material?
是否有一个有效的制度来保证质量的传入材料？
The pressure stable is the premise that it is have high irrigation quality and assuring the drip irrigation system safety, so the Pressure-regulated is necessary.
稳定的压力是滴灌系统安全运行和实现较高灌溉质量的前提，因此滴灌系统安装压力调节装置是非常必要的。
For meeting the reeds of coal production and assuring engineering quality, thd key refuse bin of the flotating refuse system are reformed.
为了适应煤炭生产的需要，对选矸系统进行必要的改造，为了确保工程质量，对关键部件矸石仓进行行之有效的特殊处理。
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