您要查找的是不是：
- It was found that there were a low contamination ratio with about 4. 5% in all the axillary buds were sterilized in 0.1% HgCl2 solution for 10min, in this way the phenomenon of browning could be well avoided. 外植体材料用0.;1%25的HgCl_2灭菌10min后接种，可使污染率降低至4
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
- Men outnumber women here in the ratio of three to one. 此地男子数量以三比一超过女子。
- The first or last term of a ratio or a series. 首项，末项比率或数列中第一个或最后一个项
- Contamination ratio 污染比率
- Contamination can't be ruled out entirely. 污染是不能完全清除的。
- The brass surface must be free of contamination. 黄铜表面必须未经沾污。
- Such contamination has been extensively studied. 人们对这种污染进行了大量研究。
- Moral contamination or corruption. 腐蚀精神上被腐化或堕落
- After-tax profit margin is the ratio of net income to net sales. 税後利润率指净收入与净销售之比。
- The contamination should be removed. 应该清除掉污染。
- An abnormal fear of dirt or contamination. 不洁恐怖对污物或污染的异常恐惧
- The ratio of men to women was two to one. 男女的比例是二比一。
- No product contamination absolute tightness. 没有产品污染的绝对气密性。
- The interval between any two frequencies having a ratio of2 to1. 倍频程频率比率为2比1的两个频率的间隔
- The other part is just contamination. 其他部分只是污染之物而已。
- We have five minutes before oxygen contamination. 在氧化之前我们有五分钟时间
- Contamination leads to lower yield. 污染导致产。
- The strike is the ultima ratio of Trade Unionism. 罢工是工联主义的最后手段。
