1) downcast
[英]['daʊnkɑ:st] [美]['daun'kæst]
下风井
2) ventilator in mine
井下通风机
1.
The article analyses the noise of source of ventilator in mine, giving the procedure of design of secondary muffler of ventilator in mine and using of comlex control technology, Effect of reducing noise is clear, the remarkable effect provides experience in dealing with the noise problem of ventilator of mine.
通过对井下通风机噪声源的分析,设计出通风机的二级消声器,并采用综合治理 方案,降噪效果明显,为井下通风机噪声治理提供了经验。
2.
This paper gives the procedure of design of secondary muffler of ventilator in mine using newly signal processing,dynamic optimization, finite element method, analysis of sensitivity and stuctural amendment.
控制井下通风机的噪声污染是目前采矿工程中迫切要求解决的问题之一。
3) Underground ventilation of uranium mine
铀矿山井下通风
4) coal mine underground fan monitoring
煤矿井下风机监控
5) airless
[英]['eələs] [美]['ɛrləs]
井下通风不良地区
6) underground
[英]['ʌndəɡraund] [美]['ʌndɚ,ɡraʊnd]
井下
1.
On the Rectification and Strengthening of Underground Safety of Non-coal Mines;
论非煤矿山的井下安全整治
2.
Treatment of underground outer source fire of coal mine;
煤矿井下外源火灾的处理
3.
Danger analysis and management technology for underground working place of Chengchao iron mine;
程潮铁矿井下作业场所危险分析及管理技术
补充资料：白银有色金属公司深部铜矿主井和副井
白银有色金属公司深部铜矿主井和副井
白银有色金属公司深部铜矿主井和副井
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条