The reducing in water production of tube well is a familiar problem, especially in the loose bed of the quaternary system.

管井出水量减少是常见的问题，特别是第四系松散层中的管井更为普遍。

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The effect of deep tube well use on the incidence of childhood diarrhoea was assessed using a random effects negative binomial regression model.

采用随机影响负二项回归模型，评估深管井的使用对儿童发生腹泻的影响。

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The large diameter tube well is an effective way for supplying domestic water with good water quality, large water volume, and cyclical recharge.

大口径管井取水水质好，水量大，能得到周期性补给，是解决生活用水的有效途径。

youdao

The BP oil company, which provided the video, says it has been siphoning about 2000 barrels of oil a day using a narrow tube inserted in the well.

VOA: standard.2010.05.18

on the tube as well, it's really nice to kind of come down the escalator

在地铁上也一样，真的很美好的是，当你乘坐自动扶梯时，

街头表演的魅力 - SpeakingMax英语口语达人

Then, it was a shelter 'cause--well, certain Tube stations, particularly deep ones, became almost a kind of home for many Londoners.

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This flagship HTS incorporates Samsung's proprietary vacuum tube and digital amplifier, as well as the latest in Smart TV features to create the best entertainment experience available.

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Friends say Mr Menezes was as shocked as all Londoners by the 7 July tube and bus bombings, as well as the attempted London public transport attacks on Thursday 21 July - the day before he was shot.

BBC: Profile: Jean Charles de Menezes