比强度是材料轻质高强的指标。

低合金钢的塑性和韧性较差。

随含水率增大,木材的体积膨胀,强度降低。

句子写作：The judge had a hard time deciding___________________.

木材的木节会降低其抗压和抗拉强度。

句子写作：He is very busy preparing IELTS. He has no time to play.

煤沥青的大气稳定性优于石油沥青。

沥青防水卷材是据原纸每平方米的质量(克)来划分标号的。

句子写作：Today at school Mr Moore brought in his pet rabbit. He showed it to the class.

高铝水泥的水化热大,不能用于大体积混凝土施工。