预制混凝土防护沟槽

xinxingdianlanpaiguanfanghugoucao jinchaodianlanpaiguanfusheshouyaojienatongbaofengxingshi,zaiyanhudianlandetongshi,duiqianqiyanhuxingchengfangbian。weileshunyingchuchanchengzhangdexuyaowogongsiyanfaleyizhongxinxingyuzhifanghugoucao,xuejianxianchangshigongke,yanzhangrenwugongqi,bianyuzhuangzhi、chaixieheyanhu,shiyizhonghuanbao、jiejianxinxingdedianlanfushexingshi,jingyouguochengxianshichanfahechangshikaozheng,kendingleqibujuheziliao,bingzaixianshigongchengzhongyuyiliyong。