查询词典 water main

The inactivation of chironomid larvae in water supply systems was experimented with environment degradable vitamin K3,its main component 2-methyl-1,4-naphthoquinone,and their congener menadione triamintriazine bisulphite.

采用易被环境分解的维生素K3、其基本成分β-甲基萘醌和同系物三氨基三嗪甲萘醌亚硫酸盐，对在给水系统中出现的4龄摇蚊幼虫进行了杀生实验。

"Over 24-30 hours, churning movements break down tough cellulose fibres and expose chyme to the colon's walls, which absorb water and electrolyte s; absorption is its main function, along with storing fecal matter for expulsion."

经过24～30小时的搅拌打碎粗糙的纤维素食物的纤维后，把食糜推向直肠壁，在那里吸收掉水分和电解质。大肠的主要功能为吸收，同时还储存粪质准备排泄。

"Over 24-30 hours, churning movements break down tough cellulose fibres and expose chyme to the colon's walls, which absorb water and electrolytes; absorption is its main function, along with storing fecal matter for expulsion."

经过24～30小时的搅拌打碎粗糙的纤维素食物的纤维后，把食糜推向直肠壁，在那里吸收掉水分和电解质。大肠的主要功能为吸收，同时还储存粪质准备排泄。

The results showed that the main factors affecting the distribution of inorganic nitrogen were coastwise fresh-water runoff and biotic activities, and the former was more important. The analysis by N/P ratio showed that N was a limited factor on the primary productivity in autumn and winter, but P was in spring and summer.

结果表明，影响北海湾无机氮含量分布的主要因素是沿岸冲淡水，其次是生物活动；通过N/P值分析，表明了N为该湾秋冬季节初级生产力的限制因子，而P则为该湾春夏季节初级生产力的限制因子。

Based on the testing and analyzing the organochlorine insecticides (such as HCHs, DDTs and dieldrin) and PCBs contents in the sediment and water body covered the sediment, this paper plots and describes the various organic pollutants distribution, simultaneously analyzes the organic pollutants sources according to the main pollution sources along the coastwise of Daya Bay.

本文通过对大亚湾海域上覆水和沉积物中有机氯农药(HCHs、DDTs和狄氏剂等)和多氯联苯等有机污染物含量的调查分析，分别对各有机污染物的分布状况进行了描述，同时根据目前大亚湾海域及其沿岸主要污染源的分布状况对各有机污染物的来源进行了初步分析。

Company's main business is production and sale of coin vending machine water.

公司主营业务为生产、销售投币自动售水机。

The HPLC methods for analysis of N--ribitylxylidine and N-methyl glucamine were established. After optimizing the operation conditions, the principal product and main impurities were well separated. And they were determined by LC-MS. The operation condition of N--ribitylxylidine is, columniation temperature is 30℃, flow rate is 0.7mL/min, UV wave is 244nm, the mobile phase is methanol: water=40: 60 .

首次建立了对葡甲胺和核糖胺的高效液相色谱分析方法，通过对色谱操作条件的优化，成功分离了主产物和杂质，在此条件下，应用液相色谱-质谱联用仪对糖基胺及生成杂质进行了指派定性，并测定了两种糖基胺及其主要杂质的含量，获得了满意的结果。

The elastic stress diagram design method is behind the times and cant meet the command in practice.In the paper the author collected and analyzed a large amount of data about the SLRCP on several typical domestic model experiments and the projects in practice. By summarizing and analyzing the data, the author set up a typical computing model and analyzed the model by the software ANSYS, by reading the output data of the stress and the crack from the program, combined with the experimental results, the author summarized the destroy procession of the stock. The paper also discussed the influence of other main factors to the crack and the stress besides the internal water pressure, such as the concrete material, the dimension of stock and the way of laid-out steel bars.

本文通过对大量实际工程中的坝后背管资料的收集、归纳和分析，选取了具有代表性的计算模型；用有限元软件ANSYS计算了典型坝后背管结构在实际内水压力作用下的应力分布和裂缝发展情况；以国内几个有代表性的模型试验和有限元计算的成果为依据，分析了在内水压力作用下钢衬钢筋混凝土压力管道管壁裂缝的特点，并尝试总结出此种管道的裂缝出现的原因及其发展规律，同时确定了坝后背管结构极限状态的新的定义方式——以坝后背管的裂缝宽度来定义。

Hydrolysis-acidification and SBR are applied to the seasoning-bearing wastewater treatment . The complex wastewater, water quantity, technical parameters and main economic and technical guidelines, practical running effect and analysis are introduced.

详细介绍了水解酸化和序列间歇式活性污泥法处理调味品废水的工艺流程、综合废水的水质、水量、工艺参数及主要经济技术指标、实际运行效果及分析。

One of the main conduit pipes for the LA water supply.

洛杉矶供水系统的主要输水管之一。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐