查询词典 float copper

This paper presents the process of research and the feature of the patent-copper-aluminium terminal clamp with embedding and soldering a copper ring.

本文介绍了一种专利产品（嵌焊铜环式铜铝设备线夹）的研制过程及其特点，该线夹完全改变了传统产品中铜铝结合的方式，在保证应有的电气性能前提下，大幅度降低了制造成本，提高了使用性能。

ASTM B 813,"Liquid and Paste Fluxes for Soldering Applications of Copper and Copper-Alloy Tube," limits the corrosivity of soldering fluxes and ensures that these fluxes are flushable in cold water, which facilitates easy removal of flux residue following installation.

美国材料实验协会ASTM B 813&铜和铜合金管道焊料应用中的液体和粘合焊剂&标准中，限制焊料焊剂的腐蚀性，确保这些焊剂能够被冷水冲刷掉，并且在以后的安装过程中焊剂残留容易被清除掉。

The progress in the research on Polyaspartic acid as green water treatment corrosion inhibitor is reviewed in detail. The inhibition effects of PASP for carbon-steel, copper and copper alloys corrosion in different solutions are summarized. It is shown that the complex of PASP and sodium tungstate has a good synergistic effect.

综述了近年来聚天冬氨酸作为水处理缓蚀剂的研究进展；探索了其对碳钢、铜及铜合金在不同体系中的缓蚀效果；指出了复配聚天冬氨酸具有较好的缓蚀协同效应。

In the recovery process of electroplating sludge, it researched on acid leaching process, N902—sulfonated kerosene extraction of copper, and copper sulfate stripping and the recovery.

对电镀污泥中铜的回收工艺进行研究，研究了酸浸过程、N902—磺化煤油萃取铜、硫酸反萃以及铜的回收。

It was composed of 75% silver and 25% copper, had a six-pointed star on one side, a Roman numeral III on the other, and — weighing in at four-fifths of a gram — was the lightest coin ever produced by the US Mint. The silver three cent piece was discontinued by the Coinage Act of 1873; at that time, a three cent nickel coin was issued, made up of copper and nickel and slightly larger than the silver version.

改硬币是由75%的银和25%的铜铸造，图案的一面有一个六角星，另一面是罗马数字III，重量只有1克的5分之4 -这枚硬币是美国造币厂有史以来发行的最轻的硬币。1873年通过的《硬币法案》，停用了这种硬币；与此同时发行了由铜和镍铸造的3美分镍币，这种硬币比银版硬币略大一些。

Comparative tests of black color passivation of zinc coating based on reference formulas published in literature including copper salt method, silver salt method and method of mixture of copper salt and silver salt were conducted.

根据已发表的镀锌层黑色钝化的铜盐法、银盐法及铜银结合法等类型的黑色钝化的参考配方进行了对比试验，并就其中较为理想的钝化配方的成分含量及其作用、操作条件的影响做了细致的分析，并对钝化液配制时的注意事项予以说明。

B-62530 silver coated copper conductive coating is made of silver coated copper powder which is of excellent conductivity.

B-62530 银包铜导电涂料是深圳市鑫盛丰化工科技有限公司的生产由优秀的银包铜导电粒子制成的导电漆。

Lower-level can only use silver, copper gilt copper thread or thread to code suffix.

级别较低的只能使用银、铜线缕或鎏金的铜缕来编缀。

Comprehensive recovery of gold ; silver ; copper and lead ; oxidation leaching copper in ammonia solution ; leaching lead with nitric acid ; leaching gold and silver with cyanide

中国科学院化工冶金研究所；黄金， GOLD ，编辑部邮箱 1997年 05期综合回收金、银、铜、铅；氧化氨浸脱铜；硝酸脱铅；氰化提取金银

Clean the ball for the major silk producing stainless steel wire, high-zinc silk, silk low zinc, copper wire, copper and other materials, because of reliable quality, integrity business, products are sold throughout the country.

清洁球专用丝主要生产不锈钢丝，高锌丝，低锌丝，镀铜丝，铜丝等各种材质，由于质量可靠，诚信业务，产品销往全国各地。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。