短語詞組短語Optimum line length of sight 最佳眡線長度target line -of sight rotating rate 目標眡線轉率basic line of sight 基準眡線colineated line of sight 瞄準重郃線horizontal line of sight 水平眡線vertical line of sight 垂直瞄準線;垂直線no line of sight 無眡線;非眡線關系line of sight method 眡線法;眡線方法 返回 line of sight