zero
【词性】:n. 【释义】: 零,零度 ◇zero in on把枪对准,瞄准目标 ‖zero activity零放射性zero airspeed零空速zero altitude掠地飞行高度zero clearing清零zero error零误差zero-feet attack超低空攻击zero-feet flight掠地飞行zero flag零标记zero gravity失重zero gravity conditions失重条件zero gravity flight失重飞行zero gravity time失重时间zero hour零时,发动进攻的时刻zero length零长zero power零功率zero signal零信号 |