好了，让我们来试试发烟测试2。

Well, let's try smoke test two.

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所以我们会看到，我们通过了第一个发烟测试。

So we'll see that, ok, we passed the first smoke test.

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在为灾发生时，不会产有毒有害气体，发烟量低。

In case of a fire, wont produce toxic or harmful gases. low smoke.

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最方便和被广泛采用的装置是一种简单的手提发烟器。

The most convenient and generally used device is a simple hand - held smoke puffer .

youdao

最方便和被广泛采用的装置是一种简单的手提发烟器。

The most convenient and generally used device is a simple hand - held smoke puffer .

youdao