The dock like circulation achieves the travel between the sea (wind) and the backyard, which is protected from the wind (outdoor shelter), allowing to have a fire pit area outside.
在海(风)和后院之间，码头实现了循环流通，它受风(室外庇护所)的保护，并配有一个室外火灾坑区。
According to the exploration problems in an open-pit mine, a new drilling method using reverse circulation DTH hammer drill is put forward.
针对露天矿钻探施工中存在的问题，提出了利用贯通式反循环潜孔锤进行施工的新方法。
It is very important to measure the volume change of mud in mud pit for the safe drilling, the control of well blowout and the lost of circulation.
测量泥浆池中泥浆体积的变化对于安全钻井，控制井涌、井漏具有十分重要的意义。
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