3.Elinvar is a trademark for a kind of nickel-chromium steel used for watch springs because its elasticity is constant over a wide range of temperatures.
埃林瓦是一种用手表弹簧的镍铬钢，因其能很的温度范围内保持一定的弹性。
4.In order to strengthen its antifriction property, the material nature of the boards chooses a special formula of high molybdenum, high chromium and nickelic.
6.The preparation methods of dimethylamine hydrochloride/chromium trioxide oxidation reagent and the selective oxidation reaction of cyclohexenol to cyclohexenone with this catalyst are studied.
7.If total chromium is to be determined, it is necessary to oxidize the Cr(Ⅲ) to Cr(Ⅵ) by potassium permanganate before reacting with diphenylcarbazide.
对总铬测定则采用高锰酸钾氧化,使铬全部转化为六价,然后再与二苯碳酰二胼反应。
8.At present, trivalent chromium electroplating process has became one of the mostimportant techniques to taking place of the seriously pollutional hexvalent chromiumelectroplating process.
目前，三价铬电镀工艺已经成为取代重污染六价铬电镀的最重要技术之一。
9.This paper has introduced the green-protection zincum-chromium coat, i n ianther word, it is "DACROMET" coat, it is one kind of liquid that confected from zincum flake alumimium flake chromate flake.
本文详细介绍了绿色环保型锌铬涂层即“达克罗”涂层,它是以锌片、铝片、铬酸盐配制而成的溶液。
10.Pyridine can react with halogens,nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.
吡啶可以和卤素、硝基四氟化硼盐、三氧化硫、硼烷及三氧化铬反应，形成一些有用的有机试剂。
11.Some common troubles such as poor throwing power,burnt deposit on rim,dull gray coating,piebaldism,blue film,hazy deposit,spongy surface and roughness in decorative chromium plating were summarized.
…;
chromic acid）
很
的温度范围内保持一定的弹性。
，硕士论文。
