downward ventilation相关的网络例句
查询词典 downward ventilation
- 与 downward ventilation 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Research on application of downward ventilation to coal mining face in horizontal seam with coal outburst in potential
结果表明，在采用下行通风后，采空区绝对瓦斯涌出量为上行风时的80%，工作面φ(CH4)下降了75%，瓦斯不再超限。
- 推荐网络例句
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If Pentium 4 used to be the master of all games built on Quake3 engine, now the situation has changed completely.
如果奔腾4使用的是掌握所有游戏建立在求苛刻的发动机，现在的情况已完全改变。
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No, this is not what we mean by framing, although the principle is the same.
不，这不是我们所讲的框架的含义，尽管法则是一样的。
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As we walked up a steep, rocky trail, he fell and uttered a mild expletive.
当我们走上一面陡峭的岩石小径时，他跌倒了，随口说了一句温和的感叹词。