discoloration

• Color test : uniform color sample after curing . but not allow color changes discoloration
  色泽试验：试样固化后颜色均匀。允许色泽变化但不允许变色。
• 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。
• The ph value is when 3 lays aside on 16th nearby the window the no change , but alkalinity then discoloration
  Ph值为3时在窗旁放置16日无变化，但碱性则褪色
• Catalytic spectrophotometric determination of trace manganese based on the oxidizing discoloration reaction between chromazurol san
  催化褪色光度法测定痕量锰
• Minocycline can rarely lead to changes in skin pigmentation or unusual discolorations that look like bruises
  Minocycline可引致炎症后色斑或不寻常的瘀黑色斑。
• 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。
• The current research status of bamboo and rattan cane discoloration and control are also described
  ( 2 )开展色变脱除，恢复已变色材原有颜色和价值方面的研究很有必要。
• Standard test method for rubber deterioration - heat and ultraviolet light discoloration of light - colored surfaces
  橡胶变质.受热及紫外线使浅颜色表面退色的标准试验方法
• Similarly , class 3 - 8 , a class make discoloration , often is the source of headache for the school
  同样地，三年八班，令人闻之色变的头痛班级，也常是学校产生问题的源头。
• Other technological advancements prevent discoloration and corrosion around the cone housing the flame burns
  其它技术上的进步还可以防止火焰燃烧锥体周围的油漆变色和腐蚀。