blackening

英 [ˈblækənɪŋ]

美 [ˈblækənɪŋ]

v.  (使)变黑; 抹黑; 丑化; 败坏…的名誉
blacken的现在分词

化学

COCA.45535

柯林斯词典

• V-ERG （使）变黑；弄黑；涂黑
  Toblackensomething means to make it black or very dark in colour. Something thatblackensbecomes black or very dark in colour.
  1. The married women of Shitamachi maintained the custom of blackening their teeth...
     下町的已婚女性还保留着把牙齿涂黑的习俗。
  2. You need to grill the tomatoes until the skins blacken.
     你得把番茄烤到皮变黑为止。
• VERB 诬蔑；玷污；给…抹黑
  If someoneblackensyour character, they make other people believe that you are a bad person.
  1. He accused him of knowingly spreading falsehoods in an effort to blacken my character...
     他指控他蓄意散布虚假信息以玷污我的人格。
  2. They're trying to blacken our name.
     他们企图败坏我们的名声。

英英释义

noun

• changing to a darker color
  Synonym:darkening

双语例句

• Are introduced the electroless blackening nickel plating technology and its properties.
  介绍了化学镀黑镍工艺及其镀膜性能。
• Behaviors of copper in blackening bath without selenium were studied.
  对铜在无硒电化学发黑液中的行为进行了研究。
• A newly developed blackening process which fitted for blackening of different stainless steel was introduced.
  介绍了一种适合不同种类不锈钢发黑的新工艺，讨论了配方成分和工艺参数等对发黑膜的影响。
• The married women of Shitamachi maintained the custom of blackening their teeth
  下町的已婚女性还保留着把牙齿涂黑的习俗。
• The output signal from the detector may be the blackening of a photographic emulsion.
  探测器的输出信号可以是照相乳胶的黑度。
• Quite significantly, there was no blackening of the emulsion at the mirror's surface.
  十分引人注意地，在反射镜表面的乳胶没有变黑。
• If this product blackening a bit, do not affect usage effect.
  本产品若略微变黑，不影响使用效果。
• The procedure, properties of solution and blackening coating were discussed.
  阐述了该工艺的流程，溶液和发黑膜层的性能。
• Formulas and technology of steel blackening at room temperature have been studied.
  对亚硒酸－铜盐－磷酸体系钢铁常温发黑的配方及工艺进行了研究。
• The results show that appropriate blackening agent and addition of phosphate both can improve the appearance of the passivation film.
  结果表明：发黑剂对膜层外观影响较大，选择不当可使膜层发花、挂灰；钝化液中添加磷酸（盐）能够显著改善黑色膜层外观。