The valve use medium pressure of its own, control and turn off with a delay function to eliminate or alleviate the water hammer.
利用介质自身的压力,控制并具有延时关闭功能,从而消除或缓解水锤的智能型止回阀。
Through this mechanism, you can delay the processing of any PHP function to a later time.
通过这种机制,可以将任何php函数的处理推迟。
A new delay function called ndelay has been introduced, which allows waits for nanoseconds.
引入了一个叫做ndelay的新的延迟函数,允许纳秒级的等待。
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