cross wire是什么意思_cross wire用英语怎么说_cross wire的翻译_cross wire翻译成_cross wire的中文意思_cross wire怎么读,cross wire的读音,cross wire的用法,cross wire的例句

Noun

• 1. either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration;

  "he had the target in his cross hairs"