In the vertical direction the temperature gradient of surface layer is the greatest. The thermophysical properties of the facial material play an important part in the heat storage of the kiln car.

在窑车垂直方向上，靠近车台面处的温度梯度最大，车台面衬料的物性对窑车蓄热量的大小起着重要的作用。

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Then you know that the gradient of g is perpendicular to the level surface.

那么就知道了g的梯度,是垂直等值面的。

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Finally the effect of refractive index gradient on the wave surface quality of laser beam is discussed.

讨论了折射率梯度对传输激光波面质量的影响和波面补偿的可能性。

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Mr. Fischer has painted the surface with a faded pale blue hue, a gradient of color he distilled from a landscape photograph using Photoshop, a computer program he employs in much of his work.

WSJ: Urs Fischer's Beds & Problem Paintings Show in Beverly Hills