But the quality of the rock wool quality can vary widely, heat preservation function good density low, the tensile strength is also low, durability is poorer.
但岩棉的质量优劣相差很大,保温机能好的密度低,其抗拉强度也低,耐久性比较差。
In the field of thermology, diamond's heat-durability and heat conductivity were enhanced.
在热学方面,使金刚石的耐热性和导热性均有增加;
The results show that AS cement possesses high early strength, low hydration heat and durability, but its shrinkage rate is higher than that of portland cement.
结果表明,碱-矿渣水泥具有早强、高强、低水化热和高耐久性等优良性能,但是干缩较大;
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