变硬的例句（变硬在句子中的用法）

• The snow hardened until ice was formed. 雪成冰后变硬了。
• Canvas stiffens as it dries. 帆布干时变硬.
• Clay hardens when it becomes dry. 粘土干了的时候就变硬了.
• The material requires higher temperatures and pressures to set hard. 这种材料需要有更高的温度和压力才能凝结变硬。
• Stoneware is fired at a high temperature to cause it to vitrify and harden. 在高温下烧制瓷器以至其成玻璃状，变硬。
• This lignification serves to stiffen and strengthen the cells. 木质化足以使细胞变硬和增强.
• The endocarp is hardened before the final swell. 在果实最后膨大期以前内果皮变硬.
• Do not add salt to beans when cooking as this tends to toughen the skins. 煮豆荚时别加盐，因为这常会使豆壳变硬。
• Give the cardboard two or three coats of varnish to harden it. 在纸板上涂两三层清漆使其变硬。
• Mould the mixture into shape while hot, before it hardens... 在混合物还没有变硬之前，趁热将它塑成形。