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if and only if
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if and only if
当且仅当
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grade of fit
grade of inhomogeneity of carbide
grade of load (起重机的)
grade of mined ore
grade of mortar
grade of oil
grade of risk
grade of service (GOS)
grade of slope
grade of steel
grade of tolerance
grade parking performance
grade pegs
grade peg(s)
grade point
grade post
grade products according to quality
grade profile
grader
grader and separator
grade rate
grade ratio
grade record
grade reduction (GR)
grader elevator
科学参考收录了1248194条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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