The hardness of ice is similar to that of concrete .

冰的硬度和混凝土差不多。

The secret to a diamond 's hardness is its atomic arrangement .

钻石硬度的秘密在于它的原子排列。

To get started , select a smallish brush with 100 % hardness and start to paint over the duplicated layer with it .

准备就绪，选择一个100%硬度的短小画笔，然后用它在复制的图层上开始绘制。

Researchers have found that the tactile sensations of weight , texture , and hardness are linked to very specific concepts .

研究人员已经发现，重量、质地和硬度等触觉与特定的概念有联系。

Change your foreground color to black , the brush hardness to 0 % and the opacity to 100 % .

将前景色更改为黑色，画笔硬度设为0%，不透明度为100%。