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relative hardness
 relative hardness
oil 相对硬度
| number
 number
bridge. 大宕分
econ.
interntl.trade. 数目
met. 数值
radio.amat. 数字
stat. 总计; 个数
tech. ; 号数

to phrases
relative hardness
oil 相对硬度
relative hardness: 2 phrases in 2 subjects
Engineering geology1
Oil processing plants1