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酸性测验
 酸性测验
oil acid test
| 比率
 "t"比率
IMF. Student's t-statistic; t-statistic; t-ratio
 K 比率
math. k-ratio
 比率
gen. proportion
demogr. rate of natural increase
environ. rate
sport. rate; relation

to phrases
酸性测验
oil acid test
酸性测验: 4 phrases in 4 subjects
Economy1
Finances1
Nursing1
Technology1