It introduces one kind of new technology — "ladder" -like sealing off a borehole by slipping casting.

提出了一种针对深钻孔的注浆封孔新方法——“阶梯”式注浆封孔方法。

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This paper analyses theoretically and technologically, the reason of barrel tooth holders sealing off , of produced gas hole and cold crack.

从理论和工艺上分析滚筒齿座开焊的原因、气孔的产生和怎样减少气孔生成、冷裂现象生成及其予防。

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After sealing off, please contrast the packing list, check whether all radom files and enclosures are complete, whether the machine is intact.

拆封后，请对照装箱单，检查所有随机文件及附件是否齐全，机器是否完好。

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Firefighters arrived within moments, sealing off the area and evacuating the house in case any further debris fell from the roof.

BBC: Vortex from plane landing at Heathrow damages roof

They are patrolling along streets, stopping cars and pedestrians to check papers and sealing off some areas to all but residents.

ECONOMIST: Our correspondent reports from Tibet

Then there is Halliburton, which was contracted to cement the production liner in the well casing, effectively sealing off the reservoir from the well bore.

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