单词	focusing-- beam
释义	focusing， beam射柱聚焦
随便看	control interval update sequence number control jet control joint control key control key combination control knob control knowledge controllabilities controllability controllability canonical form controllability condition controllability index controllability indices controllability matrix controllability of aircraft controllability subindex controllable controllable ballast controllable chain reaction controllable connection controllable converter arm controllable convertor arm controllable cost controllable factor controllable factors