Taking the geological condition in the harbour district Jingtang Port as the model, the detail analysis on lowering water level by large diameter well point are given in the paper.
以京唐港地区地质条件为模型，对大口径井点降水进行了详细的分析，对大口径井点降水在实际工程应用具有理论参考价值。
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。
On the basis of regression analysis, the relationship between wave parameters and wave force as well as moment acting on the large diameter cylinder structure is given.
基于回归分析，考虑淹没、越浪、波陡、相对水深和相对筒径等的影响，给出了作用在大圆筒上的波浪力和波浪力矩的计算公式，可用于工程实践。
This article has described the structure of arc turning tool for machining the large diameter bearing race as well as the machining process parameter.
介绍了加工大尺寸轴承圈的车圆弧工具结构及加工的工艺参数。
The superior quality apparel fabric described in this article, is knitted on precision-made large diameter machine from well packed first class materials with a high degree of evenness and cleanness.
生产高档针织服装面料需选用优质原料，使用高均匀度、无结、高度清洁、包装完好的纱线，在高精度的大圆机上织造而成。
Sometimes, the work over operation must be done to large diameter cased bore hole for the need of production of the well.
因生产需要，有时要对大套管井筒进行修井。
The whirling well in Shougang moving engineering has large diameter and buried depth. Its excavation and supporting should keep slope stability and control deformation.
首钢搬迁工程旋流井直径大、埋深大，其基坑的开挖和支护不仅要确保边坡稳定，而且要满足变形控制要求。
The large-diameter gas drainage well laid out in the Xuandong No. 2 Mine used small-diameter pilot drilling, then gradually reaming the borehole and finally completed to designed size.
宣东二号矿布设施工的大口径瓦斯抽放井以小口径导向钻进，后逐级扩孔成井。
The large-diameter gas drainage well laid out in the Xuandong No. 2 Mine used small-diameter pilot drilling, then gradually reaming the borehole and finally completed to designed size.
宣东二号矿布设施工的大口径瓦斯抽放井以小口径导向钻进，后逐级扩孔成井。
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