您要查找的是不是：
- 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。
- microbial ratio 菌种配比
- 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
- These compounds inhibit microbial growth. 这些化合物能抑制微生物的生长。
- Microbial ecology and molecular ecology. 微生物生态学与分子生态学。
- Acidity above 7.0 suggests microbial spoilage. 酸度在7.;0以上表明面粉受到微物的腐蚀。
- Study on a Long Life BOD Microbial Sensor. 长寿命BOD微生物传感器的研究
- 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。
- How do salt and sugar prevent microbial spoilage? 为何盐和糖可防止微生物腐坏食物？
- The ratio of men to women was two to one. 男女的比例是二比一。
- 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
- All fermentative processes are the results of microbial activity. 一切发酵过程都是微生物作用的结果。
- The strike is the ultima ratio of Trade Unionism. 罢工是工联主义的最后手段。
- The cross ratio he called anharmonic ratio. 他把交比叫作非调和比。
- The ratio between the two sides is one to four. 双方人数对比是一对四。
- Numerous microbial cultures convert heptachlor to its expoxide. 许多微生物培养基可以把七氯转化为它的环氧化物。
- Subsistence only increases in an arithmetic ratio. 生活资料只能按算术级数增长。
- The role of microbial enzymes in these processes has been examined. 在这些过程中，也对微生物酶的作用进行了测定。
