杀菌率的英文：
sterilizing rate

sterilizing是什么意思：
灭菌

The milk was sterilized and sealed in bottles.
牛奶经过灭菌处理后被封装在瓶子里。

Bleach, sterilize, remove stains
漂白、消毒、除污渍

The phenomenon of female sterility is common in plant.
雌性不育现象在植物界内普遍存在着。

Sulphur is also used to sterilize equipment.
硫也可用来给器材消毒。

Pollen sterile blossoms lack normal turgor.
花粉不育的花朵缺乏正常的膨压现象。

rate是什么意思：
n. 比率，速率；费用
v. 评估；认为；划分等级；值得

cumulative rating
累积收听率

These bonds have an AAA rating.
这些债券的信用度是3A级的。

To rate too low;underestimate.
低估对…估价太低；低估

A Lump Sum Rate of ...
费用合计…

To reduce in rank or rating;demote.
使降级降低级别或降级；使人降级