Directing an actor in line delivery is an essential skill for playwrights and directors.
对于导演和剧作家来说，指导演员表达对白是一项必备的技巧。
Through the analyses of causation of leakage in long distance water transferring line, this paper puts forward relevant treatment methods which can provide reference for directing practice.
本文通过对长距离输水干线漏水原因的分析，提出了相应的处理办法，具有指导实践的参考价值。
This technique can be used for on-line measuring of main salt concentration and thus directing production.
实现了主盐离子的快速测量，达到了指导生产的目的。
This technique can be used for on-line measuring of main salt concentration and thus directing production.
实现了主盐离子的快速测量，达到了指导生产的目的。
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