Usemultiply for the blend modeof the gradient overlay then .
使用多为混合模式的梯度覆盖然后。
Altitude measurements mean the road 's gradient can be determined .
海拔测量还可以判定出道路的坡度。
This incredibly simple behaviour allows the bacterium to move up a chemical gradient from areas of lower concentration to areas of higher concentration .
这种简单到难以置信的行为让细菌向化学梯度方向移动，从低浓度区域向高浓度区域移动。
So as you can see below , here we 're adding a gradient overlay from black to white , faded out a bit and on overlay mode .
你在下面可以看到，这里我们正在添加一个从黑到白的梯度覆盖，在覆盖模式下淡化一点。
Different theories predict how this metallicity gradient changes over billions of years .
