“河头”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	河头
释义	地质学词汇手册河头 streamhead
随便看	projection pursuit projection pursuit method projection room projection rules projection television projection test projection tolerance zone projection transformation projection transformation projection tube projection TV projection welding projection with two standard parallels projection with two standard parallels projective algebra projective closure projective coordinates projective coordinate system projective dimension projective equivalence projective frame projective geometry projective hyperplane projective line projective method