R esults show that the modified cement with good durability, small expansion and low alkality can be made by use of gypsum and zeolite modifying alumina cement.
以石膏和沸石对高铝水泥改
,可配制出耐

好、具有微膨胀
低碱度改
水泥。
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弱点(上) Other important developments included the discovery by Dutch military surgeon Antonius Matthijssen in 1851 that bandages soaked in water and plaster of Paris, gypsum plaster, hardened in minutes and made excellent casts to support fractures.
其他重要进展还包括1851年荷兰军医安东尼斯·马蒂森发现, 将绷带浸泡在水中和巴黎石膏(即石膏)后,能在几分钟内硬化, 形
极佳
夹板来支撑骨折部位。
中国第一季
中国第一季