subastral

基本解释

• adj.天下的(星下的；地上的)

同根派生

英汉例句

• Expatiated on the application theory of basic orbit, including subastral point calculation, visibility analysis, coverage evaluating and spacecraft life-span estimate.4.
  3、闡述了基本軌道應用分析理論，包括星下點軌跡計算、可見性分析、覆蓋評估和軌道壽命估算。
• subastral point
  星下點