... semihermetically sealed condensing unit 半封闭式压缩冷凝机组 semi-hydrated gypsum 半水石膏 semikilled steel 半镇静钢 ...
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有天然出产的半水石膏 CalCiUm Sulphate dihydrate
半水化热石膏 hemihydrate plaster
缓凝半水化石膏 retarded hemihydrate plaster
对凝结非常迅速而不利于施工的半水石膏而言，杂质的缓凝具有利用价值。
The fast setting of most building gypsum is unfavourable for construction. So the retarding effect of impurities can be utilized positively.
选取硫酸钾作为激发剂对天然硬石膏进行活性激发，并分别掺入硅酸盐水泥与半水石膏进行改性。
Choosing potassium sulfate as an activator to stimulate the activity of natural anhydrite, and modified its properties by adding Portland cement and hemihydrate gypsum respectively.
干热养护是半水石膏粉煤灰胶结材硬化体的最佳工业养护方式；半水石膏粉煤灰胶结材硬化体最适合干湿循环热养护。
Hot curing in 70 C dry-air is the optimal industrial curing mode and the best curing mode is hot wet-dry cycle curing of hardened hemihydrate gypsum-fly ash paste.
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