;
;
术;(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).
(a) 正如所提到
那样，某些燃素会减轻（轻率）假定。
)燃素,热素(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).
(a) 正如所提到那样，某些燃素会减轻（轻率）假定。
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