1) civil twilight
民用昏影终
1.
Considering the characteristics of HSPS and referring to the definition of morning/evening twilight and its calculation formula in nautical astronomy, this paper suggests the time duration for night sailing of HSPS be defined as from the beginning of evening civil twilight to the end of morning civil twilight.
针对高速客船的特点,通过航海天文学中有关晨光昏影的定义及计算公式,得出用民用昏影终到民用晨光始这段时间作为高速客船的夜航时间。
2) civil twilight
民用晨昏蠓影
3) end of astronomical evening twilight
天文昏影终
4) evening twilight
昏影
6) beginning of twilight
晨昏朦影始
补充资料：昏钟
【昏钟】
（仪式）谓初更一点后大钟百八下也。为三遍分之如晓钟。
（仪式）谓初更一点后大钟百八下也。为三遍分之如晓钟。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条