“双向钻孔”概念、定义、翻译-科学时代

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

单词	双向钻孔
释义	人类学词汇手册 hourglass perforation 双向钻孔
随便看	qualitative change qualitative change qualitative character qualitative characteristics of accounting information qualitative choice model qualitative classification qualitative colour base method qualitative comparative analysis qualitative control qualitative credit control qualitative criterion qualitative data qualitative data qualitative demography qualitative factor qualitative filter paper qualitative forecasting qualitative forecasting method qualitative graph qualitative identify reaction qualitative improvement qualitative indicant qualitative information qualitative instrument qualitative interpretation

hourglass perforation