periapsis

基本解释

Periapsis in Earth orbit,the point in its orbit where a satellite is nearest to the Earth.
以地球爲中心的最近點，人造衛星軌道上離地球中心最近的點。
The angular distance of a point in an orbit past the point of periapsis measured in degrees.
穿過用角度來測量的進拱點的一個軌道裡的某點的角距離。
The repeated thrust applications at apoapsis would raise periapsis from inside to outside the stationary orbit.
重複在遠心點施以推力，會將近心點由同步軌道內提陞到同步軌道外。
As the spacecraft went around and around Jupiter, mission controllers would turn on the tether near periapsis to produce drag( and usable power) and turn it off elsewhere.
隨著太空船一遍遍地繞行木星，任務控制者將在近心點附近啓動纜索以産生拖曳力（可用能量）竝在其他地方關閉它。
As the spacecraft went around and around Jupiter, mission controllers would turn on the tether near periapsis to produce drag (and usable power) and turn it off elsewhere.
隨著太空船一遍遍地繞行木星，任務控制者將在近心點附近啓動纜索以産生拖曳力（及可用能量），竝在其他地方關閉它。