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此项经验于1976年第2期介绍过,由于内容介绍不够详尽,并有错误,因此,发表后收到很多来信咨询,现针对大家提出的问题,特再报道。
This experience was introduced in 1976, No. 2, because the introduction of the content is not exhaustive and there are mistakes. Therefore, after the publication of the letter, I received many letters and inquiries. We are now reporting on the issues raised by all of you.