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- 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
- Ammonia-air mixtures are quite difficult to ignite. 氨与空气的混合气体不易燃烧。
- Any of various mixtures of xylidine isomers. 一种二甲基苯胺同分异构体的混合物
- 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。
- Mixtures containing a halogenated alkane. 含一卤化链烷的混合物。
- The ratio of men to women was two to one. 男女的比例是二比一。
- For dual-phase flow such as steam-water mixtures. 对于双相流体，如蒸汽-水混合流体。
- "Oil mixtures" means any mixtures containing oil. (四)"油性混合物"是指任何含有油份的混合物。
- Condensable/volatile mixtures (psychrometrics, etc. ) 可凝结/可挥发混合物 ；
- 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 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。
- Strictly speaking all kinds of natural water are actually mixtures. 严格地说，各种天然水实际上都是混合物。
- The ratio between the two sides is one to four. 双方人数对比是一对四。
- Subsistence only increases in an arithmetic ratio. 生活资料只能按算术级数增长。
- This is the prime ratio of the nascent increments. 这是最初增量的最初比。
- Scientists are trying to increase that ratio. 科学家正设法增加这个比率。
