The rapid growth of industry fathered a new type of voluntary organization, the trade - union.工业的迅速发展培养出一种新型的志愿组织 ― ―工会.He fathered a school of notable poets.他创立了著名诗人的流派.He fathered at least three children by the wives o...
离子交换器离子交换器有复床和混床之分.Ion exchange equipment has the duplicate bed andmixed bed.图二到图六显示交换器的基本操作.Figures through show the basic operations of a switch.确认交换器完全组装好, 并经过测试与排水.Verify exchanger is completely assembled, tested, an...