1) downriver ventilation
下行风
1.
This paper discussed methane emission,the reasons for methane reduction in up corner,problems should be considered in the condition of change from normal ventilation into downriver ventilation.
对下行通风时瓦斯涌出及下隅角瓦斯减少的原因进行论证,对上行风改为下行风应注意的问题进行了论证。
2) downward ventilation
下行通风
1.
Research on application of downward ventilation to coal mining face in horizontal seam with coal outburst in potential;
近水平突出煤层回采工作面下行通风应用研究
2.
Field experiments using downward ventilation were studied and the gas emission and distribution laws at the goaf working face were discussed.
结果表明,在采用下行通风后,采空区绝对瓦斯涌出量为上行风时的80%,工作面φ(CH4)下降了75%,瓦斯不再超限。
3) declensional ventilation
下行风流
1.
In order to find more effective control measurements for declensional ventilation mine fire,the catastrophe potential function of airflow reversal in a declensional ventilated mine fire was deduced by using catastrophe theory,which indicates the airflow reversing process has discontinuous characteristics.
为了寻求下行风流火灾的有效控制途径,应用突变理论推导了下行通风主干风路风流逆转的突变势函数,揭示出其逆转过程具有突变特征,分析了下行风流逆转具有的突跳、分叉、不可达、滞后、多模态等多种非线性特征,实验验证了下行风流逆转的突变过程。
4) downward wind
下行风量
1.
Delivery of catalyst particles by a screw feeder at the inlet of a downer in a hot model was studied, and the effects of pressure difference, downward wind, temperature on feeding rate were investigated.
将螺杆式进料器应用于下行床热态小试实验装置的入口进行催化剂的输送,考察了出入口压差、下行风量、温度等因素对输送速率的影响。
5) descentional ventilation
下行通风
1.
The authors elaborate the application of longwall mining with descentional ventilation at 7327 working face in the medium-thickness seam with big dip-angle,and point out the ways of fire prevention by giving even air pressure,burying pipe and gelatinizing,and using atomizing inhibitor.
论述沛城煤矿7327回采工作面大倾角中厚煤层下行通风长壁开采,采用均压、埋管注胶、雾化阻化剂等防灭火措施及效果,提出了采煤工作面大倾角中厚煤层长壁开采的防灭火方法。
6) undercast air bridge
下行风桥
补充资料：塘下行
【诗文】：
塘边日欲斜，年少早还家。徒将白羽扇，调妾木兰花。
不是城头树，那栖来去鸦。
【注释】：
【出处】：
全唐诗：卷372-33
塘边日欲斜，年少早还家。徒将白羽扇，调妾木兰花。
不是城头树，那栖来去鸦。
【注释】：
【出处】：
全唐诗：卷372-33
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