灰，经过沸化，生石灰的体积大大膨胀了。它们的质地非常纯粹，至少和白垩或碳酸钙烧成的一样。把石灰和细沙搅拌在一起，就成了上等的灰泥。
the operation lasted forty-eight hours， and succeeded perfectly. it then became necessary to leave the smoking mass to cool， and during this time neb and pencroft， guided by cyrus harding， brought， on a hurdle made of interlaced branches， loads of carbonate of lime and common stones， which were very abundant， to the north of the lake. these stones， when decomposed by heat， made a very strong quicklime， greatly increased by slacking， at least as pure as if it had been produced by the calcination of chalk or marble. mixed with sand the lime made excellent mortar.
这期间，居民们首先制造出
第66章知识(5/23)