煤被干馏后剩下固体残余物:焦炭.Coal is destructively distilled leaving a solid residue, coke.泥煤焦油的性质和由木材干馏所得到的焦油的性质相似.Peat tar has similar properties to the tar derived from the destructive distillation of wood.干馏段: 采用优质高炉粘土砖砌筑,内置中心管.P...
Many more institutions, especially banks, were allowed to lend money for mortgages, and what was more, banks could lend out more money than they actually held...允许更多的机构，尤其是银行推出抵押贷款;此外，银行发放的贷款可以超过其实际持有资金。National banks ca...
He spends his time flitting between Florence, Rome and Bologna.他辗转于佛罗伦萨、罗马和博洛尼亚三地之间。If parents wanted to entrust their child to the best surgeons, they traveled to Bologna's medical school.如果父母们想给孩子看最好的外科医生，他们会前往博洛尼...