英语词汇approach clearance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	approach clearance
释义	approach clearance 简明释义允许进场网络释义 1 ?进场许可 ... Approach 进场；近场 Approach Clearance 进场许可 Approach Control Position 终端管制席位；进场管制席位 ... 2 ?允许进场 ... 允许解除 permissive release 允许进场 approach clearance 允许进位信号 carry clear signal ... 短语 1 expected approach clearance time 航预料准许进场时间 ; 预计进场许可时间 2 posterior approach focus clearance 后路病灶清除双语例句 1 Expect approach clearance at 1215. 预计进近许可在1215。 2 To enter Class B airspace, such as an approach to a major metropolitan airport, an explicit ATC clearance is required. 需要持有明确的空中交通管制许可才能进入B类空域，如接近一个大都会机场。 3 Off-road capability is further improved by optimization of approach and departure angles, coupled with a generous 225-mm ground clearance. 越野能力已进一步改善的方法和离去角的优化，以慷慨的225毫米的离地间隙耦合。
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