borings

Building begins after field surveys and borings characterize the soils .

建造工作开始前，必须先完成现场调查和钻探土壤特性。

The holes are only borings , less than a foot in diameter .

这些洞只不过是一些钻孔，直径不到1英尺。

The prediction work has been carried out by both analysing a few caves known by borings and using the harmonic analysis method .

预测工作是通过对少量钻孔已知洞穴的分析，应用调和分析法进行的。

It is this water , called ground water , which is found in wells , in borings , and in springs .

这种水就叫做地下水，在水井、钻孔和喷泉里都能见到。

Through the analysis of familiar faults in borings machine tool maintenance , discussion is made on how to prolong the service life of parts structures by renewing material and improving machinery .

结合实践，对金属切割机床维修中常遇到的问题进行了论述，从材料选用和改进零件结构两个方面对机床零件的寿命使用问题进行了论述。

Viewing that in the present engineering geological investigation , small diameter borings are most commonly employed in water pressure test , this paper analyzed problems in the formulae usually adopted . It establishes water pressured head loss calculation formulae of φ 50 drilling rod .

本文针对当前在工程地质勘察中多采用小口径钻孔进行压水试验的特点，分析了在用公式存在的问题，并建立了φ50钻杆压水水头损失计算公式。