送交者: cktears 于 2010-03-25, 00:47:00:

回答: 丁克、三胎忽略不计，则生育意愿为0.3 + 0.7*2 = 1.7， 由 Amsel 于 2010-03-24, 22:36:20:

• That's how you are a physicist instead of an engineer :-) (无内容) - Amsel (0 bytes) 2010-03-25, 01:15:17 (425189)

加跟贴