clearances

英 [ˈklɪərənsɪz]

美 [ˈklɪrənsɪz]

n. 清除; 排除; 清理; 净空; 间距; 间隙; (录用或准许接触机密等以前的)审查许可，审核批准
clearance的复数

柯林斯词典

N-VAR 清除;清理
Clearanceis the removal of old buildings, trees, or other things that are not wanted from an area.
1. ...a slum clearance operation in Nairobi...
  内罗毕拆除贫民窟的行动
2. The UN pledged to help supervise the clearance of mines.
  联合国承诺协助监督扫雷工作。
3. ...widespread clearance of jungle land.
  丛林地带的大面积砍伐
N-VAR (官方的)批准，许可
If you getclearance todo or have something, you get official approval or permission to do or have it.
1. Thai Airways said the plane had been given clearance to land...
  泰国航空公司说，该飞机已经得到降落许可。
2. He has a security clearance that allows him access to classified information.
  他持有安全许可，可以接触机密信息。
N-VAR (路面、河面与上方桥梁之间的)净空，间隙，间距
Theclearanceof a bridge is the distance between the lowest point of the bridge and the road or the water under the bridge.
1. The lowest fixed bridge has 12.8m clearance.
  最低的固定桥下方通行高度为12.8米。

The effects of tip clearance on duct propeller's performance were investigated in six different tip clearances.
选择六种不同的叶梢间隙研究叶梢间隙对导管桨性能的影响。
We do a lot of house clearances.
我们为许多家庭清理废旧物品。
The dynamic analysis of an oscillating cam mechanism with clearances
考虑运动副间隙的摆动从动件盘形凸轮机构动态分析
The dynamic analysis of Geneva mechanisms with clearances and elasticity
具有弹性和加工误差的槽轮机构动态分析
The effect of leakage on the rolling piston compressor can be validated indirectly through the performance experimentation for variable clearances.
通过变间隙的性能试验来间接验证泄漏对滚动转子式压缩机的影响。
Fixed occasional defensive clearances across own area.
修正了在自己门前***横向解围的问题。
The Assur Groups Method of Analyzing Transition Process of Planar Linkage with Pair Clearances
用杆组法分析含间隙平面连杆机构的过渡过程
Discussion on Bridge Site Selection and Navigational Clearances for Sea Crossings
跨海桥梁桥址选择和通航净空尺度问题的探讨
The bridge and the top of the bus was only ten clearances.
桥与公共汽车车顶之间的间隙只有十厘米。
This aluminum coats and tightens up the clearances of the parts, which creates a loss of power.
这些金属屑覆盖并使各部件间间隙变得更紧，这将导致动力损失。