First, a working curve must be made according to the colourgradation data and then the density of the substances is found out with the help of the extinction value of the water samples on it.
依据色阶数据制成工作曲线，再依水样的吸光值从工作曲线找出对应的物质浓度。
2
Create a glimmering a gradation of colour from sophisticated dark to light shades with every move.
细致闪亮的深浅渐变色调，随着您的每个动作而千变万化。
3
Inspired by feathers, this adorable pair of rhodium-plated earrings presents a stunning gradation of crystal colour, from clear crystal to blue, set in pave.