查询词典 wells

The model of photon-induced refractive index change based on GaAs materials is presented briefly, then the model based on GaAs/AIGaAs quantum wells materials is deeply analyzed by treating the effects of photon-excited carriers self-consistently. Furthermore, the propagation characteristics of multi-quantum well waveguide is invested, and the low-loss multi-quantum well rib waveguide deeply etched is also designed by using the spectral index method.

在简要分析了基于GaAs材料的光致折射率模型的基础上，通过自洽的方法，重点研究了基于GaAs/AlGaAs多量子阱材料的光致折射率模型；其次分析了量子阱波导传输特性，利用谱折射率法设计低损耗的深刻蚀脊形量子阱波导。

Taiwan eagle, SUS SU bit, special-purpose stainless steel drill bits, drill bits Cinda America, NACHI Drilling Tsui, YAMAWAúand, TANOI field wells silk attack, die, OSG·machine, Japanto attack the rich, silk sheet, Cinda-feng steel reamer, OKAZAKI Japan Okazaki reamer, the brand-name file, standard file, saw blade, straw plate, AMADA sawing zone.

台湾鹰牌、SUS苏氏钻头，专用不锈钢钻头，美国信达钻头，NACHI钻咀，YAMAWA弥满和、TANOI田野井丝攻、板牙，OSG欧士机、日本富士丝攻、丝板、信达锋钢铰刀，OKAZAKI日本冈崎绞刀，各国名牌锉刀、标锉、锯片、秸碟，AMADA锯带等。

To solve effectively the problem of sand removing in low-pressure absorption wells,a drilling sand pump was developed.

为了有效解决低压漏失井的井下清砂问题，研究开发了一种具有钻进功能的捞砂泵。

For low permeability horizontal wells, sand jet fracturing is an effective stimulation technique which combines the advantages hydraulic jetting and hydraulic fracturing, and can be used for orientated perforation without mechanical packer.

对于低渗透水平井，水力喷砂压裂是一种有效的增产技术，它集合了水力喷射和水力压裂的优点，可以定向射孔，无需机械封隔。

Under the condition of fresh water and 15%NaCl solution, the slurry is lower fluid loss, good rheological property and stable settlement, the set cement has higher compressive strength, which is suitable for cementing oil and gas wells in high pressure salt bed.

该水泥浆在淡水和含15%NaCl的情况下均具有较低的失水、较好的流变性能和沉降稳定性等性能，凝固水泥石具有较高的强度，适用于高压盐层油气井的固井施工。

In consideration of the characteristics of high pressure salt bed cementing of oil and gas wells, high density salt slurry is often used for cementing.

针对高压盐层的油气井固井特点，注水泥时常采用高密度含盐水泥浆。

Using newest examination data of Well J6 and data of existed 12 wells, this paper re-evaluates source rock in Jixi Basin vertically and horizontally.

利用最新的鸡6井的分析化验资料以及已钻12口探井的数据，从纵向和横向上对鸡西盆地的烃源岩进行了重新评价。

The results show that, the nitrate-N concentration in groundwater in the reed area was 0.2~0.8mg/L and significantly lower than that in surrounding wells (more than 20mg/L), and the reed wetland can remove nitrate pollution in shallow groundwater. The distribution of denitrifying bacteria showed obvious rhizosphere effect, and the higher biodenitrification in natural reed wetland was related to the distribution of denitrifying bacteria. There was a negative relationship between the nitrate-N concentration and the number of denitrifying bacteria in groundwater.

结果表明：芦苇区浅层地下水中硝酸盐氮仅为0.2~0.8mg/L，远低于湿地周围井水中硝酸盐氮质量浓度（大于20mg/L），芦苇湿地能够去除浅层地下水中硝酸盐污染；反硝化细菌在土壤中的分布呈现明显的根际效应；野生芦苇湿地较强的生物脱氮作用与反硝化细菌分布有关，地下水中硝酸盐氮含量与反硝化细菌分布呈负相关。

Single wing vertical fracture can be found in a few of fractured wells.

少数压 裂井出现单翼垂直裂缝。

Leading, 2-0, going into the seventh, Wang gave up a double to Matt Stairs then watched Vernon Wells' roller up the third base line stop in fair territory.

2－0领先进入到第七局，王被Stairs敲出一支二垒安打，然后看著Wells三垒方向的滚地球滚进了界内。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。