spontaneousadj.自发的,自然的,本能的;自然产生的
Spontaneous fistula自发瘘
spontaneous azotemia自发性氮质血症
spontaneous hatching自发酸化
spontaneous bunching自发群聚
spontaneous creaming自然膏化
spontaneous mutation自发突变,自然突变
spontaneous emulsion自发乳状液,稳定乳状液
spontaneous emission自发发射
spontaneous feelings自发的感情
spontaneous activity自发性活动