黃河泉 发表于 2018-4-26 14:59 
1. 你若要问程序,永远附上资料;若要附上资料,永远用 dataex 印出资料。
2. 尔后请用 dataex (先 ssc ...
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Listed 14 out of 14 observations
以上是资料,谢谢