... water surface gradient 水面坡降,水流表面坡度 wind velocity gradient 风速梯度 gradient of river bed 河床比降,河床坡度 ...
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Wind gradient (风速梯度) mean when the windshear involves only a change of speed with changing height.
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... resultant wind velocity 合成风速 ; 相对风速 gradient of wind velocity 风速梯度 wind velocity recorder 风速记录器 ...
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梯度风速 gradient velocity
测量风速梯度时，相对误差小于1%。
When wind gradients are measured, the relative error is less than 1%.
文中并介绍了实际用以测定风速及风速梯度时可用的线路。
Appropriate circuits for wind speed and for wind gradient measurements are also described.
本文介绍一种适合观测风速及风速梯度用之热电偶风速仪。
A thermocouple anemometer suitable for wind speed and wind gradient measurements has been constructed.
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