“半圆形拱门”概念、定义、翻译-科学时代

单词	半圆形拱门
释义	美术、书法与摄影词汇手册半圆形拱门 Roman arch
随便看	back-shift back-shock nucleus kinetic energy backshore backshore backshore backshore back side back-side crank pumping unit back side printing backside printing back sight backsight back-silvered mirror back siphonage back siphonage back site back site back-sizing backslant backslanted type backslash backsliding backslope backslope terrace backspace

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。