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

单词	press-in ventilation
释义	press-in ventilation Encyclopedia 工学施工通风释 press-in ventilation压入式通风将通风机设置在洞口外，风管的出风口设在掌子面附近，在通风机的作用下，新鲜空气从洞外经通风管路送入掌子面，稀释有害气体和粉尘后，经隧道排出洞外的措施。
随便看	negatively definite matrix negatively definite quadratic form negatively graded module negatively invariant subspace negatively oriented base negatively pressurized irrigation negatively semi-definite negatively stable point negatively stable solution negative magnetoresistance negative mapping negative matrix negative meson negative metric negative molecule negative multinomial distribution negative nitrogen balance negative norm negative number negative octant negative orientation negative orthant negative parallax negative part negative particular proposition

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