初期恒星体 Young stellar object ; YSOS
体时期恒量 Individual Time-invariant Variable
二期恒载 secondary dead load
恒指期权 Hang Seng Index Options ; haha Hang Seng Index Options
恒指期货 Hang Seng Index Futures ; haha Hang Seng Index Futures
恒星周期 [天] sidereal period
恒等周期 [数] identity period ; repeating unit ; identity
期望恒在 Hope Has A Place
恒定周期 fixed cycle ; constant cycle
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