discoloration

noun

1. 变色；退色
   the process of becoming discoloured
   1. discoloration caused by the sun
      因日照引起的退色
2. 变色处；退色处
   a place where sth has become discoloured

in AM, use 美国英语用 discolor


1. V-ERG (使)变色;(使)褪色
   If something discolours or if it is discoloured by something else, its original colour changes, so that it looks unattractive.
   1. A tooth which has been hit hard may discolour...
      受过重击的牙齿可能会变色。
   2. Some oil had seeped out, discolouring the grass.
      有些油渗出来了，把草地染得变了颜色。

1. Kidney and liver problems frequently cause discoloration that shows up in nails and skin.
   肾病和肝病常会引起指甲和皮肤变色。
2. Ginkgo's ability to improve blood circulation and reduce the discoloration of varicose veins.
   银杏可改善血循环和减少静脉变色。
3. Moreover, add active carbon of some proportion if discoloration is needed in the filtration course.
   另外，如果过滤时需要脱色，还需加入一定比例的活性碳。
4. You can use our NATU-CLEAR to remove dark spots, even skin tone and skin discoloration.
   你可以使用我们的自然清楚，以消除暗斑，甚至皮肤口气和皮肤变色。
5. Discoloration of metal surface caused by oxidation.
   金属表面因氧化而变色。
6. The eyes and fingernails show only slight discoloration.
   眼球和指甲仅仅只有少量的变色。
7. This discoloration qualitatively suggests that the substance is low in inorganic iron.
   从定性的角度考虑，这种褪色标明这种物质的无机铁的含量很低。
8. The design of a new kind of traffic light based on discoloration electroluminescent devices ( EL) is introduced.
   介绍了一种基于变色电致发光器件的新型交通灯设计。
9. The deficiency may show as a purplish discoloration in seedlings.
   营养不良可能表现在树苗变为浅紫色。
10. The Characters of Polyphenol Oxidase in Lotus Root and Prevention of Discoloration of Lotus Root
    莲藕中多酚氧化酶的特性及莲藕的护色
11. Unfortunately, problems arose with water quality, causing unpleasant water discoloration and aromas in the cisterns.
    不幸的是，水质问题的出现引起废水变色并且在蓄水池里产生香气。
12. Azelaic acid, a prescription lotion used for acne, can calm discoloration and inflammation due to rosacea as well.
    壬二酸，用于治疗痤疮的洗液，可以降低变色和炎症（由于酒渣鼻）。
13. The trace of a point whose direction of motion changes. a discoloration caused by heat.
    运动的方向改变的一个点的迹线。因受热而变色留下的痕迹。
14. And there'll be no smell, no discoloration.
    没有气味，也不会变色。
15. The author investigates the minute amount of magnesium with xylend orange in water using discoloration spectrophotometry approach in this paper.
    本文作者研究了利用褪色光度法测量水样中微量镁的方法。
16. In patients with haematomas besides the status of pain, the extension and discoloration of the effusions were assessed.
    血肿患者除了疼痛的程度，还评估了渗出的范围和色泽。
17. In some children, loose skin, discoloration, or tiny, dilated blood vessels ( telangiectasias) may remain after the hemangioma has fully involuted.
    一些孩子，当血管瘤完全消失后，可能会留下松懈的皮肤，变色，或微小的、扩大的血管（毛细管扩张）。
18. The parts list includes a special anode that can be ordered if water odor or discoloration occurs.
    如果水产生异味或变色，可以从配件清单中选择订购特制的阳极棒。
19. Research on discoloration of wastewater containing methyl orange by adsorption on expanded graphite
    膨胀石墨对甲基橙废水吸附脱色的研究
20. Bleach may cause slight discoloration.
    漂白可能会引起轻微的褪色。
21. The catechins are responsible for the slightly astringent, metallic taste of green tea beverage. They are involved also in browning and other types of discoloration in foods of plant origin.
    金棕色，茶褐色，赤褐色一种淡棕色与褐色的中间色彩儿茶素是绿茶饮料略带收敛性金属味的主要根源，也与植物性食品的褐变和其它类型的变色有关。
22. Growth of the diffuse swelling in the neck is painless, not circumscribed, and no skin discoloration.
    颈部呈弥漫性肿大，肿势逐渐增加，边缘不清，皮色如常，不痛。
23. Since the buildup of impurities often results in defective plating such as discoloration or loss of corrosion resistance.
    因为杂质的积累经常导致不良的电镀，如脱色或丧失防腐性能。
24. Contact with strong oxidizing acids such as nitric acid, chromic acid and so on, due to strong oxidation products will cause brittle hair, discoloration, early damage.
    接触强氧化酸如硝酸、铬酸等，因强氧化作用会造成产品发脆、变色、早期损坏。
25. Did you see this discoloration on the fuel handle?
    看到加油柄上的污渍了么？
26. A discoloration on the skin; a blemish.
    这是他历史上唯一的污点。
27. However, due to oxygen in the air in the light of the catalyst, with the fabric of the disperse dyes polyester fibers and additives in the reaction of yellowing, discoloration;
    但是由于空气中的氧气在光的催化作用下，与织物中的分散染料在涤纶纤维和助剂反应黄变、色变；
28. Patient was un-happy with spaces and discoloration of existing teeth.
    患者主诉希望改善前牙的间隙和变色。
29. Mature as if is a very brutal matter, has represented the youth outflow and the dream discoloration.
    成熟似乎是一件很残酷的事情，代表了青春的流失和梦想的褪色。
30. Slight or no discoloration of the enamel or primer may indicate the cadmium plating was not heated to the extent that cadmium embrittlement would be suspected.
    珐琅或底漆轻微退色或没发生退色，表示镀镉层没有受热，可能没有出现镉脆情况。

noun

1. the act of changing the natural color of something by making it duller or dingier or unnatural or faded

   Synonym:    discolouration

2. a soiled or discolored appearance
   1. the wine left a dark stain

   Synonym:    staindiscolouration