2.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.
11.The Mosul Dam, the largest in Iraq which produces hydroelectricity, is built on a foundation of soft gypsum rock, making erosion a constant challenge.
「十九世纪冒险故事 Thrilling Adventures By Land And Sea by James O. Brayman」评价该例句:好评差评指正
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13.During the years that Jim Farley traveled as a salesman for a gypsum concern, and during the years that he held office as town clerk in Stony Point, he built up a system for remembering names.