designator [ˌdezɪg'neɪtə]

例句:

• For cultures that do not use a PM designator, this property returns an empty string.
  对于不使用PM指示项的区域性, 此属性返回一个空字符串.
  
• The laser target designator has two functions which are guidance and range finding.
  激光目标指示器的两个主要功能是为寻的武器提供目标指示和测距.
  
• For cultures that do not use an AM designator, this property returns an empty string.
  对于未使用AM指示项的区域性, 此属性返回一个空字符串.