Objective to investigate success ratio, anatomy position, air leakage pressure and complications between reusable laryngeal mask LMA classic and single-use LMA Unique.

目的本研究比较了普通喉罩和一次性喉罩放置的成功率，解剖位置、口咽漏气压和并发症。

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Short of replacing the entire water main, which is both expensive and disruptive, the only way to cut background leakage below these levels has been to reduce the water pressure.

由于费用昂贵而且破坏性大，没有人对水管进行彻底更换。减少底面渗漏流量的唯一办法就是降低水压。

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The pressure of ascension in oil from sealing gasket place, or leakage of oil consumption and cause additional engine leakage faults.

该压力的提升导致机油从密封圈或密封垫处渗漏，造成额外的机油消耗和发动机泄漏等故障。

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If the gas pressure is reduced, it is a clear sign that leakage is occurring.

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While other attempts are planned to block the hole, it is probable that oil will continue to pour from it for another couple of months, until relief wells are drilled to intersect and reduce the pressure in the currently flowing well and cut-off the leakage of perhaps 50 million barrels of oil contained there by the injection of concrete deep into the seabed.

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