化学配方数据库
| 配方类型： | CEMENT AND RELATED PRODUCTS |
| 配方说明： | Portland Cement Retarder |
| 配方组成： | U.S. Pat. 3,188,22 Boric Acid/0.05-0.5% magnesium Silicofluoride/0.1-1% |
| 配制方法： | These percentages are based on total weight of cement mix. |
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