bright coal是什么意思

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用法例句

Study on low cyanide bright 22K gold plating process;

低氰电镀光亮22K金工艺研究

A new technology of bright acidic electroless Ni-P alloy plating;

一种新型酸性光亮化学镀镍-磷合金技术

Antitarnishing of bright tin plating on copper wire;

铜线材防变色光亮锡电镀工艺

this paper summarize process of Non-cyanide Alkaline Brightness Copper Plating for to substituted cyanide copper.

本文概述了取代氰化镀铜的无氰碱性光亮镀铜工艺及其在生产中的应用情况。

The component data of pearl nickel, bright nickel , acidic copper and brass plating solution in production were analyzed when the best result of the plating deposit obtained .

为了获得电镀的最佳结果,在生产中对珍珠镍、光亮镍、酸性铜和黄铜四种镀液的成分参数进行了统计分析。

The effects of manganese element on bright nickel plating were investigated based on Watts nickel.

研究了以瓦特镀镍为基础,锰元素对光亮镀镍的影响;测试了光亮镍-锰镀层的表面形貌、X射线衍射和镀层硬度以及在质量分数为5%的NaCl溶液中的阳极极化曲线。

The influencing factors regarding to brightness of profile and the modifying measures are reviewed in this article.

本文论述了门窗用塑料异型材光亮度的影响因素和提高其光亮度的相关措施。

Inflence of electrolyte composition and process paramters on surface roughness as well as brightness during electropolishing was studied experimentally.

结果表明：在一定浓度组成的硫酸基电解液中，采用合适的工艺操作参量（ＤＡ，Ｔ，ｔ）可以使现有纯金表面的粗糙度下降两级，而表面光亮度明显提高，并呈鲜艳的金黄色外观。

The definition and expression of brightness in current textbooks are nearly the same, but there are two different kinds of geometrical schemes used.

目前通行的光学教材中关于光亮度定义的文字叙述和数学表达式基本相同，但是却有两种不同的几何图示。

Research on mensuration of brightener content for bright acid copper plating by spectrophotometry;

分光光度法测定酸铜光亮剂含量研究

Study on the new brightener for zinc electroplating in soidium chloride bath;

新型氯化钠(钾)镀锌光亮剂的研究

Study on a New Brightener for Sulate Zn-plating;

一种新的硫酸盐镀锌光亮剂的研制