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synodical period
space 会合周期
tech. 会合周期
synodic period
avia. 会合周期; 朔望周期
space 会合周期 (太阳系天体的)
tech. 会合周期
synodic periods
tech. 朔望周期
synodical period
: 2 phrases in 1 subject
Technology2

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