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- Test results of surface gas extraction technology from boreholes in the goaf in Zhangbei Coal Mine, Huainan Mining Group are introduced in the paper. 本文介绍了淮南矿区张北矿地面钻孔抽采采空区瓦斯技术的试验成果。
- This paper elucidated the theoretical basis for controlling the fluidization parameters by calculating the SGV (surface gas velocity) in (he LLDPE reactor. 通过对LLDPE聚合反应器表观气速(SGV)值的计算,为流化参数的控制提供了理论依据。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- Half the road surface is being taken up to lay new gas pipes. 人们挖开半个路面以铺设新的煤气管道。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- He is honest only on the surface. 他只是表面诚实而已。
- The surface of the sun is a glowing gas envelope. 太阳的表面是一层炽热的气体层。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- The surface of the lake is quite still. 湖面相当平静。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元，寄航空要3元6角。
- Wheels won't bite on a slippery surface. 车轮打滑。
- The surface must be thoroughly clean. 表面必须彻底弄清洁。
- The surface between the ribs of a ribbed vault. 梁腹，腹板某扇形拱的胁拱之间的平面
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
