“sinking ventilation”的概念、定义、翻译、参考文献-科学参考

单词	sinking ventilation
释义	sinking ventilation Encyclopedia 工学竖井施工方案释 sinking ventilation凿井通风竖井施工时，采用换气方法排除爆破后聚集在掘进工作面空气中的有害气体和粉尘，改善作业环境的作业工艺。
随便看	negative ion mode negative jump negative K group of a ring negative K-group of a ring negative K-theory negative kurtosis negative leap second negative lens negative life event Negative likelihood ratio negative likelihood ratio negative limit point negative limit set negative list approach to foreign investment administration negative list management negative logic negatively definite negatively definite form negatively definite kernel negatively definite matrix negatively definite quadratic form negatively graded module negatively invariant subspace negatively oriented base negatively pressurized irrigation

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