The characteristics of dilatation and contraction of the cold-pressed briquette made of Hebi coal during carbonization was studied with a shrinkage indicator in this paper.
用型块收缩仪研究了由鹤壁煤制取的冷压型煤在炭化过程中的膨胀与收缩特性。
Last, the temperature contraction coefficient and dry shrinkage coefficient of porous concrete are advanced.
得出多孔混凝土的温缩系数和干缩系数。
Since contraction of nodular iron is bigger than its expansion nodular iron castings must be fed from outside to prevent shrinkage defect.
由于球铁的收缩大于膨胀，球铁件铸造必需外部补缩。
应用推荐