“长方形”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	长方形
释义	地质学词汇手册长方形 oblong
随便看	variable density wind tunnel variable diaphragm variable difference variable domain variable dose rate irradiation facility variable elasticity of substitution variable electric current variable energy cyclotron variable energy nuclear synchrotron variable error variable evaluation variable exchange rate variable exchange-rate system variable exchange-rate system variable expression variable factor variable factor input variable factor proportion variable factory overhead cost variable field curvature (VFC) variable filter variable flow control variable focal length variable focal length variable focal length lens