interchangern.交换器interchangen.交换；立体交叉道v.交换interchangeable connector互换接头interchange specification互换技术规格interchangeable card feed可换卡片输入interchangeable objective可换物镜interchangeable substitute可互换的代用品interchange esterification酯交换interchangeable assembling可互换装配interchange work with play工作与娱乐交替进行interchangeable attachment可互换附件interchange unit separator互换单元分隔符