Micromechanics
[化] 微观力学
🗣️ 情景例句
This has been a long day.
这是个漫长的一天。
He is playing on the swings outside.
他正在外面荡秋千。
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。