gas drainage under suction

常见例句

Having analysed the "test on the gas drainage under suction in goaf", the failure cause has been found.
通过对采空区抽放瓦斯试验进行分析，找出了试验失败的原因。
The principle of hydraulic chuck and the design of transmission gear train of driving head of the drilling rig for gas drainage under suction is introduced.
介绍了瓦斯抽放钻机动力头液压卡盘的原理和传动齿轮系的设计；
Based on the analysis of the gas migration law, it has proposed an idea of "gas drainage under suction in goaf" so as to provide some new theoretical basis for the performance.
在对采空区瓦斯流动规律分析研究的基础上，提出了采空区瓦斯抽放的设想，为采空区瓦斯抽放提出了新的理论依据。