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不変 ふへん質量 しつりょうじゃなかった
fuhen shitsu ryōjanakatta

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Noun
, 
Da Copula

The past negative form of 不変質量

1. Was not invariant mass.; Was not rest mass.

Past/Perfective
, 
Negative
, 
Physics

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不変質量じゃなかった

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