自じ由ゆう膨ぼう張ちょうMeanings1nounfree expansionphysics›Physics term for the expansion of a gas into a vacuum without doing work.自じ由ゆう膨ぼう張ちょうでは、気き体たいは外がい部ぶに仕し事ごとをしない。In free expansion, the gas does no work on the surroundings.
