;
;
;(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).
(a) 正如所提到的那样，某些
素会减轻（轻率）的假定。
物中的)素,热素(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).
(a) 正如所提到的那样，某些素会减轻（轻率）的假定。
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