- angle of gradient
- 梯度: gradient; grad
- 角: role; part; character
- 高度角: altitudeangle; elevating angle; elevation angle, altitude angle; elevationangle; high angle; vertical angle
- 开度角: opening angle
- 坡度角: angle of gradient; angle of pitch; angle of slope; gradient of slope; ramp angle; slope angle; slopeangle
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