易逃逸,不安定,無常
Fugacity \Fu*gac"i*ty\, a. [L fugacitas: cf. F. fugacit['e].] 1. The quality of being fugacious; fugaclousness; volatility; as, fugacity of spirits. --Boyle. 2. Uncertainty; instability. --Johnson.
fugacity n 1: the tendency of a gas to expand or escape 2: the lack of enduring qualities (used chiefly of plant parts) [syn: {fugaciousness}]