您要查找的是不是：
- large diameter direct drainage borehole 大孔径直排孔
- He came to look at the drainage. 他是来检查排水设备的。
- The drainage system has been aged. 排水系统已经老化了。
- methane drainage borehole 沼气排气钻孔
- drainage borehole 抽采钻孔
- The drainage of the town is not good, some of the pipes are broken. 城里的排水系统不好,有些水管断裂了。
- We must dig a drainage ditch to run off the water. 我们得挖一条排水渠把水排掉。
- The town's drainage is very efficient. 这城市的排水系统很好。
- A drainage passage, as to a culvert. 排水沟排水通道，如阴沟
- Is there adequate drainage where needed? 需要排水的地方其排能是否足够?
- Pancreatic abscess obviously requires drainage. 胰腺脓肿显然需要引流。
- The quality of borehole directly influences the effect of blasting. 钻孔质量的好坏,直接关系到爆破效果的优劣。
- The area has good natural drainage. 这个地区有良好的天然排水系统。
- Borehole fluid holdup defines what type of reinvasion occurs. 井内流体持率决定发生二次侵入的类型。
- The bricks were bedded in sand to improve drainage. 沙里埋入砖块，以改进排水系统。
- Acid Drainage Killing Some Fish in Ky. 河流遭酸性排放,鱼和昆虫死亡。
- Both uses tend to improve drainage. 两者对排水都有改进作用。
- The defect in the drainage must be remedied. 这排水系统的缺陷该设法补救。
- The drainage of the bathtub is clogged. 浴缸的排水堵住了。
- Bad drainage caused the land to be flooded. 排水不利容易使土地淹水。
