Onium
a. [化]鎓的,络合阳离子的
🔁 扩展释义
【医】 ┳(指一类复合阳离子,如铵、?、锍等)
🗣️ 情景例句
Thank you.
谢谢。
Could you speak slower?
你能说得慢一点吗？
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%。