tarnishing

Research in PVC-U profile discoloration by sulfurous pollutants;

关于硫化污染引起PVC-U型材变色的研究

Effects of Acid and Alkali on Discoloration Prevention of Paulownia Wood;

酸碱对防止泡桐木材变色的影响

Controlling Measures for Yunnan Hemlock Discoloration during Drying;

云南铁杉干燥过程中变色的控制

Tarnishing Mechanism and Anti-tarnishing Techniques of Gold and Silver Coins;

金银币变色机理和抗变色工艺研究

The effects of various corrosive gases on silver tarnishing and the corrosion products in the tarnish layer were dis- cussed,especially hydrogen sulfide and silver sulfide.

讨论了大气中各种腐蚀性气体对银变色的影响,以及变色膜中各种腐蚀产物的成分及状态,以硫化氢气体和硫化银为主要对象进行阐述,侧重介绍了最近30年的研究结果。

In natural environment, tarnish was observed on the surface of a commemoration silver coin of China.

银纪念币在大气环境中表面发生变色,失去原有的金属光泽。

Causes for tarnishing of tin electrodeposits and solutions thereof;

锡镀层变色的原因分析及解决

Tarnishing causes and tarnishing resistant measures of gold and silver-plated connectors;

接插件镀金、镀银层变色原因及防变色措施

The anti-tarnishing experiments can be taken to confirm a certain alloy's anti-tarnishing capability.

银合金的特点是容易发生硫化变色,通过抗变色试验可以确定合金的抗变色性能。

This paper summarized the main function and advantages of technology of microcapsules,emphasized on microcapsules mechanism of color change and temperature control.

论述了微胶囊化的主要目的与优势,着重介绍了变色微胶囊可逆变色机理,相变微胶囊的控温及冷却作用机制。

Based on the frequent color change phenomenon in iodized salt in recent years,the authors approaches color change mechanism from the aspect of effect of reducer in brine,effect of stabicizer in iodine solution as well as impact of storage environment and impurity ions,putting forward measures to prevent color change in iodized salt.

本文针对近几年频繁出现的碘盐变色现象,从卤水中还原物作用、碘液中稳定剂的作用、包装储存环境和杂质离子的影响4个方面探讨了碘盐变色的机理,并提出了几种防止碘盐变色的措施;通过比较认为还原性卤水适用于还原性的KI作为加碘剂。

Discolouration of the deposits in production of brass plating;

浅谈黄铜电镀生产中镀层变色问题

Study on the Discolouration of Copper Core during the Crosslinking Process of Silane Crosslinking PE Cable;

硅烷交联聚乙烯电缆在交联过程中铜线芯变色的研究

In this paper,the discolouration and microbes pollution of LAP solution by slow-cooling were indevestigated.

本文探讨了ＬＡＰ晶体溶液降温法生长过程中易出现的母液变色和细菌污染问题，找到了一种效果更为理想的防菌剂－液体石蜡。

In HCl medum,thder the Fe(Ⅲ) Cataktsus H 2O 2 Oxidze Sacid inorder to make it change color, and there are good sexual relations of line when the degrel is measured asith the cxistena of the Fe(Ⅲ) to change color, so by this it have set up new luminosity of catalysis law.

在HCl介质中在Fe(Ⅲ )催化作用下H2 O2 氧化S酸 (即 1-氨基 - 8-萘酚 - 4 -磺酸 )使之变色 ,变色程度与Fe(Ⅲ )的存在量之间有良好的线性关系 ,借此建立了新的催化光度法 。

To impart color to or change the color of.

上色给…上色或变色

discoloured wool

尿污毛,变色毛,褪色毛

The chameleon can take on the colors of its background.

变色龙可以变成周围环境的颜色。

The chameleon's skin replicates the pattern of its surroundings.

变色龙的皮肤可随环境改变颜色.

"Chaneleon Nails"At The Click of a Switch

“变色龙”指甲：随意变换指甲颜色

the adaptive coloring of a chameleon.

变色龙适应环境变化的色彩。

The chameleon adapts to its surroundings by changing color.

变色蜥蜴用变色来适应环境。

Color-changing mechanism of reversible thermochromic materials and its application

可逆热致变色材料的变色机理及应用

allochroic, allochromatic

变色的,非本色的,带假色的

The traffic lights changed from green to amber to red.

交通灯从绿色变成琥珀色再变成红色。

scarlet shading into pink

猩红色逐渐变成粉色

color a moderate to strong red.

把中等色变成深红色。

cause to become sallow, as of complexion.

使肤色变成菜的颜色。

Red grades into orange.

红色逐渐变成橙色。

The leaves of the tree were turning yellow and red.

树叶变成黄色和红色。

the play of color on iridescent feathers.

彩虹色羽毛颜色的变幻

change the role of(an actor)

改变（演员）的角色

The rock varies in color: white, buff, brown, black, and green varieties occurring.

岩石在颜色上有多种变化，有白色、淡黄色、棕色、黑色及多种绿色变种。