难检字字典在线查询

汉语拼音：dùn huà

金属经强氧化剂 或电化学方法氧化处理，使表面变为不活泼态即钝态的过程。如铝经浓硝酸浸过，表面形成致密氧化膜，可保护金属，使之不易被侵蚀。

• Moistened flakes are heated to inactivate the antinutritional factors.

  湿润的薄片需加热,以钝化抗营养的因素.

• One reasonable explanation is that etching removes and blunts microcracks.

  有一种合理的解释是说腐蚀能够去掉并钝化微裂纹.

• There can be important consequences of activation or deactivation.

  在这里可能有活化或钝化的重要结果.

• All the tetraderadentate ligands were found to be effective with copper, which forms planar four - coordination complexes.

  所有四价配位体对铜都有钝化效果,能与铜形成平面的四价配位络合物.

• Only two types will be included in present discussion: metal - ion deactivators and peroxide decomposers.

  本节只讨论其中的两类: 金属离子钝化剂和过氧化物分解剂.

• The destruction on inactivation of cyanide ion may be accomplished by complexion formation.

  可以通过形成络合物的方法来破坏氰离子发生钝化作用.

• Ion selective electrode analysis of fluoride in deluted chromating solution is described.

  阐述用氟离子选择电极测定低铬钝化液中的氟的方法.

• Content of chromium is lower, pollution to the environment is reduced.

  钝化液中铬酐含量较低, 减少了对环境的污染.

• Regeneration of the effluent by diaphragm electrolysis is suggested.

  介绍了镀锌低铬钝化工艺,采用隔膜电解法再生钝化废液.

• The development history of trivalent chromium passivation for zinc plating was overviewed.

  概述了镀锌三价铬钝化的发展历程.

• Fourththe main market Shenglang, KDJ random targets will be repeated high passivation.

  主升浪行情中, 随机指标KDJ会反复的高位钝化.

• Progress of molybdate passivating for zinc coating is stated.

  本文综述了国内外镀锌层钼酸盐钝化的研究概况.

• Corrosion protection mechanism of rare earth passivation was stated.

  阐述了稀土钝化膜的防蚀机理.

• Excellent aluminum or copper , Ni - plated or processed by colorful oxidizing.

  优质铝型材或铜材, 表面彩色钝化或镀镍.

• In order to reduce corrosive rate , zinc plated parts are usually chromatized.

  为减少锌镀层的腐蚀速率, 通常采用铬酸盐钝化.