查询词典 corrosion

The major aging problems in a PWR plant and their assessment technologies were summarized as the radiation embrittlement of reactor pressure vessel materials,thermal aging of cast stainless steel,stress corrosion cracking of steam generator tubing and metal fatigue in primary circuit of a PWR plant.

主要的老化机理有反应堆压力容器的辐照脆化、铸造不锈钢的热老化、蒸汽发生器传热管的应力腐蚀开裂和金属疲劳。

The use of brass tubes for the air-cooled zone of a power plant steam condenser can lead to serious corrosion by ammonia,while the application of copper-nickel alloy tubes or titanium ones is associated with expensive costs.

电站凝汽器空冷区采用黄铜管会产生严重氨腐蚀，采用铜镍合金管或钛管则价格昂贵。

The steam air heater is often used for preventing low-temperature corrosion and ash clogging in the boiler,but different influence upon economic efficiency of unit in operation may be resulted by different parameters of the said steam air heater .

锅炉常采用暖风器来预防低温腐蚀和堵灰，而暖风器不同的运行参数会对机组运行经济性产生不同影响。

Power plant smoke stack in the process, as a result of changes in working conditions, flue gas temperature between 40 ~ 150 ℃, the incident state will exceed 180 ℃, or even higher, and therefore requested the anti-corrosion material has excellent heat resistance.

电厂烟囱在排烟过程中，由于工况变化，烟气温度在40~150℃之间，事故状态下将超过180℃，甚至更高，因此要求防腐材料具有优良的耐热性。

Third, variable speed gear box: 1, Box materials and internal and external corrosion requirements be consistent with the body.

三、变速传动箱： 1、箱体材质及内外防腐要求与阀体原则一致。

Speed gearbox 3.1 box and the internal and external anti-corrosion material requirements and body principles.

变速传动箱 3.1箱体材质及内外防腐要求与阀体原则一致。

1 Speed gear box and outside box materials and corrosion requirements be consistent with the body.

变速传动箱 3.1 箱体材质及内外防腐要求与阀体原则一致。

The basic working principle for the use of mobile thin metal wire to make electrodes, to carry out work on the pulse spark discharge in addition to metal corrosion, cut into type.

其基本工作原理是利用连续移动的细金属丝作电极，对工件进行脉冲火花放电蚀除金属、切割成型。

It was found from orthogonal experiment that the recombination of sodium benzoate, ammonium benzoate, cinnamic acid and sodium tungstate had good synergistic reaction. Based on the orthogonal experiment, a kind of new prescription of vapor phase corrosion inhibitor for DI material is found, which is not only high effective but also friendly to environment.

通过正交试验发现：苯甲酸钠、苯甲酸铵、肉桂酸与钨酸钠的复配使用，表现出很好的协同作用，从而得到了一种新的环保、高效的用於DI材的气相缓蚀剂配方。

To solve the problem of bridge structure corrosion and environment pollution,a new type of snow-melting by embedding heating pipes in the bridge deck was presented based on hydronic heating.

为解决融雪剂融雪不仅腐蚀桥体及其它基础设施而且污染环境的问题，提出了一种新的热力融雪方式即在桥面内敷设管道的基于加热流体的融雪方式。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。