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

• 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 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。
• 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。
• I.Choose the correct answer and write it on the Answer Sheet by blackening the corresponding letter Only one answer is correct. ( 20 points)
  选择正确的答案并答题纸上相应的字母涂满。每题只能选择一个答案。
• The blast left a gaping hole in the front window and shattered a glass door, twisting and blackening its metal frame.
  这起爆炸事件将征兵站前窗炸出裂孔，并将玻璃门炸得粉碎而金属框架变形发黑。
• The Development and Application of DD-921 Room Temperature Iron and Steel Blackening Agent
  DD-921钢铁常温发黑剂的研制和应用
• Bath formulas of blackening pretreatment and manganese series phosphating at mid-temperature were introduced.
  介绍了预黑处理液配方和中温锰系磷化液配方。
• New process of blackening surfaces of iron and steel at room temperature and its possibleblackening mechanism are stated.
  报道了在钢铁表面发黑新工艺，探讨了发黑机理。
• 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。
• A newly developed high efficient degreasing and rust removing solution for pre blackening treatment of high strength bolt is presented.
  根据高强度螺栓发蓝工艺的独特性，研制适用工艺要求的常温除油除锈液，在生产中应用良好。