“交换器”用英语怎么说？

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...