water main的例句大全

The inorganic arsenates ( AsO 4 3-) and the arsenites ( AsO 3 3-) are the main species of arsenic in natural water, while the concentrations of organic arsenic compounds are generally low.

砷在自然水系中主要以无机砷酸盐（AsO43-）和亚砷酸盐（AsO33-）两种形式存在，而砷的有机化合物的含量一般都很低。

In Chengde area, water table is shallow, gravel bed is the main aquiferous layer and its penetrability coefficient is comparatively large, settlement radius caused by dewatering is large as well.

承德地区地下水位较浅，含水层主要为圆砾层，并且渗透系数较大，基坑降水引起的地面沉降半径也较大。

The main target for the protection of water conservation forest and its ecosystem.

其主要保护对象为水源涵养林及其生态系统.

A study on water balance of main FIXED-DUNE shrubs ( arbors) in Mu Us

毛乌素沙地主要固沙灌（乔）木林地水分平衡研究

The main classification of water-based epoxy anticorrosive paint was introduced.

分析了水性环氧涂料的成膜机理。

Main Types and performance of Amphipathic polymer in water reducing agent in Concrete in China were briefly introduced.

简述了国内混凝土减水剂用两亲性聚合物主要类型和性能及研究进展。

Using high-effective and universal biocide and algicide to control algae and slime is the main measure of industrial water treat-ment technology at present.

采用高效、广谱杀菌灭藻剂来抑制藻类及生物黏泥是目前工业水处理技术的主要措施。

We should select the 1: 50000 scaled aero-photo or the 1:50000 scaled image by digital aerophotography as the main source for the monitoring of water and soil conservation measure in this area;

应以比例尺不小于1：5万的传统光学航空摄影影像或数码航摄数据作为该区水土保持措施监测的主要信息源；

This article through a mechanical feeling experiment, the water absorbant experiment, the vacuum soundness test and the differential thermal analysis experiment has carried on the research to some red phosphorus base smoke agent main physics and chemistry performance.

本文通过对某赤磷基发烟剂机械感度试验、吸湿性试验、真空安定性试验和差热分析试验，对其主要理化性能进行了研究。

The main problems of the bubbler irrigation applied in field crops are small water discharge, the big transection area of furrow and border.

将现有非充分灌溉技术研究成果应用于大田作物中，从作物耗水量、单产、产量要素、水分生产率、节水量与总效益等方面进行了综合评价。

The main environmental factors determining distribution of various kinds of bryophyte communities are soil water content and annual rainfall.

通过定量分析可知，决定上述苔藓植物群落类型分布的环境因子主要是土壤含水量和降水量。

A small dredger and other boats were used for remove of broken concrete in water. The dredge of the main channel was finished only in 15 days.

用挖泥船，配合其他船只，进行水中清碴，用15天时间就把主航道疏通。

Surface cleanliness and integrity is a core technology issue in the manufacture progress of authentic stainless steel equipment for key nuclear instrument, like nuclear main pump, sea water desalting plant contacting with high halogen concentration and boiler plant suffered high temperature corrosion.

表面高度清洁度和完整性是第四代先进核电站中核主泵等关键不锈钢装备高洁净度制造的核心，也是接触高浓度的氯离子海水淡化设备和高温腐蚀锅炉设备的必要条件。

In this wave, the capital, self-financing firms are the main force of the water stirred.

在这波浪潮中, 游资 、 券商 自营 资金都是搅动池水的主力军.

Water is a main component of human environment, and also the basic element of life.

水是人类环境的主要组成部分, 也是生命的基本要素.

The Enthalpy Calculating Method for Main Condensate Water at The Outlet of The Heater with A Drain Pump

带疏水泵加热器出口主凝结水焓的计算方法

The paper discusses the control valves which use in the air conditioning water or steam conduit of intelligent buildings, introducing their structure, main parameters, working principles, characters and how to take the generic method to design and select the caliber of control valves.

合理选择阀门在供水管道中的重要性文章讨论应用于智能建筑空调水、汽系统中的控制阀门，介绍它们的结构、主要参数、工作原理、特征和选择阀门口径的简化方法。

A mechanical seal and water seal combined floor drain consists of a floor drain cover, a main floor drain body, a float and a hose type magnetic seal valve.

一种机械密封与水封组合地漏，由地漏盖、地漏主体、浮子和软管式磁力密封阀组成。

It is the main task and important base of the coal mine water prevention and cure.

正确判别突水水源是矿井防治水工作的主要内容，也是煤矿防治水工作的重要基础，为采取合理有效的防治水措施提供决策依据。

In the test and research of flue gas desulphuration by using waste alkali liquid in Venturi cyclone water film precipitator, the effect of main parameters on desulphuration efficiency was tested, and the results were analyzed by using double film theory.

试验研究了文丘里旋风水膜除尘器利用废碱液进行烟气脱硫时主要参数对脱硫效率的影响，并运用双膜理论对试验结果进行了分析。