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- Through the wind tunnel tests, this paper investigates the characteristics of wind-induced instability of the H-shape hangers with different perforating ratios of their webs. 摘要通过风洞试验，研究了不同腹板开孔率的H形吊杆风致失稳特性。
- 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。
- perforating ratio 开孔率
- 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
- The perfor mance indexes thereof are tested. 检测了该醇酸树脂的各项性能。
- 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 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
- Perforating injury of eye ball, any type of scleral repair. 眼球穿伤,巩膜任何方式切除及修复。
- 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。
- Many things perfor (effectively) but not (efficiently). 许多事情表现得有效但缺乏效率。
- We should think about how to promote our perfor mance first. 我们应该首先考虑如何提升我们的业绩，（而不是薪水)。
- 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。
- A punching, perforating, or stamping tool, especially one used by a goldsmith. 尤指金匠用的凿孔器
