Hartmann diaphragm
[机] 哈特曼光
🧩 词语组成解析
哈特曼(姓氏)
diaphragm
['daiəfræm]
n. <机> 隔板;<解>横隔膜;<物>光圈;快门;
adj. 光圈的，隔膜的;
🗣️ 情景例句
He devoted his life to promoting world peace.
他一生致力于促进世界和平。
Maybe he'll fall for it this time! Ha, ha.
这一次它可望落入陷阱。哈！哈！
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%。