“directed line”概念、定义、翻译-科学时代

单词	directed line
释义	数学词汇手册 directed line 有向（直）线
随便看	transportation noise transportation of explosives transportation of radioactive materials transportation of refuse by rail road transportation of sediment transportation-out transportation permit transportation pipe transportation problem transportation quarantine transportation rate transportation regionalization transportation risk transportation service system transportation system transportation test transportation ticket insurance transportation velocity transportation voucher transportation 　陆海空联运 transportation 　陆海空联运--transportation（land, water, air transportation）　陆海空联运 transportation（land, water, air transportation）　陆海空联运 transport by containers transport by water transport by wave

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。