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Purpose : to test shutoff valve no.2 for tightness .

目的：检测2号关闭阀的密封性。

Of course the automatic shutoff electric curtain time more is self-evident .

当然电动窗帘的自动开启关闭时间更不在话下.

It did not fail until they finally admitted that the shutoff valve failed and they had no solution .

直到他们最后承认关断阀无效才算失败，并且没有解决方案。

This will enable the stem to expand slightly without binding or damaging the valve and will not affect shutoff .

这使得阀杆能够稍微膨胀，不会卡住或损坏阀门，也不会影响关闭效果。

Gene cloning and structural analysis of virion host shutoff protein of pseudorabies virus .

伪狂犬病病毒宿主关闭蛋白的基因克隆及结构分析。