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heliacal setting是什么意思，heliacal setting的翻译，heliacal setting音标、读音、用法和例句_开心英文字典_柠咚词
开心英文字典

heliacal setting

H 开头单词

基本解释

  • [天文学]偕日落夕没偕日降

英汉例句

    双语例句

  • The heliacal rising or setting of a star indicates to within a few days the date in the annual day-cycle.
    星辰偕日升降，说明了其在几天内年日循环的日期。

词组短语

    短语

  • heliacal rising and setting 偕日升降
  • heliacal rising or setting 偕日升落

专业释义

    天文学

  • 偕日落
  • 夕没
  • 偕日降