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菏泽修防段从一九五○年开始在刘庄险工摸索根石走失问题,并试行一些防止走失的方法,取得一些成效。兹将我们的初步认识以及处理的意见介绍给大家参
Heze repair section from 1950 began in Liuzhuang masonry groping groping problems, and try some ways to prevent the loss, and achieved some results. We will introduce our initial understanding and handling comments to you