Cephalograph
[医] 头描记器
🏥 医学释义
头颅描记器
🗣️ 情景例句
Well, make yourselves comfortable.
噢， 请大家自便。
He that will take the bird must not scare it.
欲捉鸟莫惊鸟。
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%。