空中英惯用短语:
| - 区域航空摄影 area aerial photography
- 医用压缩空气 medical compressed air
- 医用旋片式真空泵 rotary blade vacuum pump for medical use
- 十二指肠空肠襻不全旋转 incomplete rotation of duodenojejunal loop
- n. 升空飘荡之力（尤指超自然力）. powers of levitation
- 半包裹铜皮的空头弹 Jacket Hollow Point
- n. 半打装啤酒. Note that a packet/pack of cigarettes contains some cigarettes but a cigarette packet/pack may be empty. 注意a packet/pack of cigarettes（一盒香烟）有一定数量的香烟, 而a cigarette packet/pack（一个香烟盒）可能是空的. A parcel (US also package) is something wrapped, often in brown paper, so that it can be sent by post. *parcel（美式英语亦作package）指包起来（常指用牛皮纸包裹）邮寄的物品 a six-pack of beer
- n. 半空中, 空中, 上空 midair
- v. 协和式飞机开创了空中旅行的新纪元. Concorde inaugurateda new era in aeroplane travel
- 单一空位 single vacancy
- 单作用式空气泵 single-acting air pump
- 单动式空气压缩机 single-acting air compressor
- 单动式空气压缩机 single acting compressor
- 单景航空摄影机 individual camera
- 单粒子单空穴态 one particle one hole state
- 单级式空气压缩机 single-stage air compressor
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