(1/2)ҳ
DZߣû𣿡Զźүʵ
һ˵һǹˣʵȫǷdzġ
ᣬǹսÿһ졣
ǿЦ
ƾսƺҽѧоͶ룬ǹƵı̡ƼȾƷڴҡ
սͳսڼ䣬˴ս˾ξ飬ǶԵˣǹˡƬˣĴƶ˴ơѧѪȾƵĽ
սЩҽѧɹӦҽԺҲʼϵͳĴ˾̡
1970ִУ֥Ӹ硢ɼʼԵרҵġ
ʱǵǹˮƽ˵һ䴦ڹҵ߱ҲΪ
ү˵
ôû˵˵˺üΣֻʱ̫ãԼҲûա
ˣܸӣɹطҲ꣬˺üҽԺȻ˵вͬǻ϶Dz
ʱչ
ˣʱİ취ȷʵ̫࣬Ҫȵ1980ҲݼҲܶ죬1990ŽϵͳΧ˷ּ
ΧҪͳֲɹʽɵӣҳ¾ֻҪ6£ձΪ־1976ݣˣǹָܻҲ40%
үӶ˶٣Ȼĵ˵
˵ˣDZߵҽձˣҿɲǸҶκôԵЩĵ֣һһأ
һսձҽѧǰѧϰ5060ձõĻָʻձרҵʿˣȷʵձҽִҵ
ѧЭȫرҽԱ
Ϊ˻սҴ٣ձ˴Ȼִ
ûκãҲԭڡ
Կͷе㼤ˣǴ⣬źүʵ
ұܶ𣿡
үԣ˶ұߵȣ
ұܣơ
֫أʡ
ү̧˸̧ǹĶһⶼûС
ŷ˵
ھû취ˣֻʱû⡣
˵գתͷԼĶ˵
ˣǰʱ仹˸ȫ顣
ó
վԱߵλŽ˿۾װԼİóһļ˫ֵݵ˷ǰ
ԴһһҽԺIJԼ顣
аۼ飬˶ܼ飬оܼ飬ȫ״̬顣
˶ܼд
Ϻ֫ήϥؽֱ㲿´ֺ̧ΣŹؽںϥؽ˰пɽС
δǰֺĴֺܼļΪ0ȫ̱
dz̼1ؽڻ
֫⼡3ܶԿɹؽڻܶԿ
(1/2)ҳ,һҳĶ
ǩĶ