The determination of tank number includes the calculation of production cycle and tank number. The design of tank structure includes bottom gradient, tank reinforcement and air pumping from tank side.

缸体数量的确定包括计算生产周期和计算缸体数量，缸体结构的设计包括底部倾斜、缸体加强、缸边抽气。

youdao

Now in a new layer above the watercolor layer, and drawing straight up, make a Linear Gradient going from black to transparency so that afterwards your canvas basically fades to black down the bottom.

现在在水彩图层之上再新建一个图层，然后从下至上从黑色到透明做线性递减绘制，这样基本上整个画布到底部就褪化为黑色了。

youdao

There is a social gradient in health that runs from top to bottom of the socioeconomic spectrum.

健康方面的社会梯度从社会经济状况的顶端延伸到底部。

youdao