净化程度的英文：
degree of purification

degree是什么意思：
n. 阶层；度；学位；程度

(degree of)importance,seriousness or influence
重要性、严重性或影响力（的程度）

current amplification degree
电流放大率

These universities are entitled to grant degrees.
这些大学有权授予学位。

A thermometer calibrated in degrees Fahrenheit.
用华氏温度校准的温度计。

The unemployment rate will rise by degrees.
失业率将会渐渐增加。

purification是什么意思：
n. 纯化；涤罪

xanthan gum, fermentation, purification
黄原胶,发酵,提纯

Purification technology study for the purification of injected seawater at Chengdao Oilfield
埕岛油田注入海水净化处理技术研究

Which of the purification procedures is least effective?
此酶纯化过程中哪步效果最差？

I work in a water purification plant.
我在一家水净化工厂工作。

Production by ermentation and purification of xanthan gum
黄原胶的发酵生产和提纯