colouration

例句:

• This causes a rust colouration of the affected areas.
  来自BBC
• The mechanism of the surface colouration of the flame - retardant nylon product and its application are introduced.
  介绍阻燃尼龙制品表面着色的机理及其应用.
  
• The regularity is significant for explaining colouration of pearl , appraising the colour and identification pearls.
  这对珍珠的颜色成因解释 、 评价和鉴定均有意义.
  
• The developments of technologies for plastics colouration with colour master - batches were mainly introduced.
  重点介绍了塑料色母粒着色技术的进展.
  
• It is a hybrid form and has the colouration I associate with some seaweeds - yellows and smudgy blues.
  来自BBC
• Four subspecies are recognised, which mainly differ in the colouration of the plumage on the head and nape.
  来自BBC