本文阐述了利用激光全息法和热线法检测气雾流中液滴尺寸和分布情况的基本原理及方法，并通过检测丝网垫式除雾元件实例，说明这两种方法的可靠性。

This article expounds the checkout of drop sizes in gas-mist flow and its distribution by laser holography and hot-wire methods, and through real examples it shows the two methods are reliable.

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