“return air level”的概念、定义、翻译、参考文献-科学参考

单词	return air level
释义	return air level Encyclopedia 工学开拓工程释 return air level回风水平用来排出井下采场内污风的主要水平巷道所处的水平。
随便看	Hofmann burst Hofmann category Hofmann degradation Hofmann elimination Hofmann rearangement Hofmann rearrangement Hofmann rule Hofmeister series Hofreiter Hofstadter Hofstadter-Conway 10000-dollar sequence Hofstadter ellipse Hofstadter figure-figure sequence Hofstadter G-sequence Hofstadter H-sequence Hofstadter male-female sequences Hofstadter point Hofstadter Q-sequence Hofstadter, Robert Hofstadter sequence Hofstadter triangle hof-stage HOG hog deer hogfennel root

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