So using additives properly can obtain the better technical and economic effect in substituting the common cements for the special ones to deal with the troublesome zones.

因而合理使用外加剂可以使常用普通水泥在现场处理复杂地层时代替特种水泥，取得良好的技术、经济效益。

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So using additives properly can obtain the better technical and economic effect in substituting the common cements for the special ones to deal with the troublesome zones.

因而合理使用外加剂可以使常用普通水泥在现场处理复杂地层时代替特种水泥，取得良好的技术、经济效益。

youdao