管井

Appropriate quantity of heat exchange of unit length tube well should be chose according to edaphic characteristics.

因此应根据土壤特性，选择合适的单位长度管井换热量。

The design of voltage and current measurement circuits, reference signal circuit, sonde of the tool and model well construction are also included.

在理论上探讨套管井电阻率的测量方法及测量原理，并详细地推导测量电阻率的计算公式。

The effect of cementing quality on cased-hole log was studied.

同时研究了固井质量对套管井测井的影响。

Then, basing on the practical problems of the studying area-the thickness of aquifer is little, the capability of depositing water is finite, the Quaternary loose stratum directly superimposes the bedrock strong breeze girdle, the writer thinks it is difficult to answer for the water use of the polyvinyl chloride project by the centralized tube well pumping.

根据研究区含水层厚度小、储水能力差，第四系松散层直接叠加在基岩强风化层之上的具体特点，认为管井集中开采难以满足聚氯乙烯工程的需水量要求，采用集水廊道最大限度地激发河流对地下水的补给，是在这一地区获得较大开采量的有效方式。

The bridge straine spread and applied in the water well drilling is a new technique in recent years. But some users have not fully understood about the performance and indication of bridge straine and made a lot of declinations in the course of choice and case to lead to the fail of bridge straine or tubed well.

供水井桥式滤水管推广应用是近几年的新技术，不少使用者对桥式滤水管的性能指标不十分了解，在选择和下管的过程中出现了不少偏差，导致了桥式滤水管或管井的报废，造成了严重的经济损失。

The crossing channel in a cased well is a column filled with fluid in the cement layer between the steel pipe and formation.

非轴对称井孔声场研究是近年来声波测井领域的热点之一，本文着重于带窜槽的套管井声场研究。

Plumbing riser, guest washroom and bathroom need floor drain trap

管井，浴室，卫生间需要有地漏

Wells, well drilling technology is extremely important to have the requirements for large-diameter steel tube-wells.

水井的成井工艺极为重要，必须要求是大口径钢制管井。

Loggings on seven horizontal cased holes are made by the protection method, and the result shows that all the logging data are first-rate.

在此基础上，研制了测井仪器机械保护装置，采用国产仪器和使用机械保护法在7口井上进行多次水平套管井固放磁测井，测井资料优等品率均为100％。

With establishing geological models, this paper numerically simulates the electromagnetic field, in which the receiving winding is vertical and parallel to the bole axis respectively, analyzes the amplitude of induced electrical potential in receiving hole and its variation with geological body, well-to-well distance, and transmitting frequency, and testifies the results with the data sets from three cross-well electromagnetic loggings in Shengli Oil Field.

本文以电磁场理论为基础，假设地下非均匀介质是关于发射器所在的井轴对称，发射源为处于垂直于井轴或平行于井轴放置的通以交流电的多匝线圈，对普通井及套管井井间电磁测井原理及方法、金属套管的几何参数及磁导率的确定方法、金属套管及发射频率等对井间电磁测井影响的规律等进行了系统研究。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。