The metastable zone widths of glutamic acid solution at different cooling, agitation, and crystallization growth rates, as well as the induction periods of crystallization nucleation under different supersaturations were measured. 本文测定了谷氨酸溶液于不同降温速率、搅拌转速下的结晶介稳区宽度以及不同过饱和度下的晶体生长速度和结晶成核诱导期。