air clearance
英
美
- air n.空气;天空;空中;感觉;神态;曲调;装腔作势v.晾干;使通风;广播
- clearance n.清除;清理;清仓甩卖;间隙;许可证;结关;通关
- There was a clearance of only ten centimetres between the two walls.
两堵墙之间只有十厘米的空隙。
- When fibers swell, they fill the air spaces and thus reduce ventilation.
一般纤维膨胀后,占据了空隙,因而减少了通气能力。