“pin drawing”的概念、定义、翻译、参考文献-科学参考

单词	pin drawing
释义	pin drawing Encyclopedia 工学零件图释 pin drawing销画法用于零件定位连接的圆柱形或圆锥形紧固件的画法。
随便看	umbilic direction umbilic line umbilic point umbilicus umbra umbra and penumbra of the sunspot umbral umbral algebra umbral calculus umbral dot umbral eclipse umbral flash umbral index umbral notation umbral operator umbral shift umbrella umbrella anchor winch umbrella clause umbrella effect umbrella fern umbrella fern family umbrella ferns umbrella graph umbrella hydro-generator

科学参考收录了854744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。