exchangern.交换器；换热器；兑换商exchangev.交换；兑换n.交换；交易所；兑换；交战exchange velocity[机] 交换速度exchange treaties[经] 换约, 外汇条约exchange of blows互击exchange of texts交换文本exchanged entropy[化] 交换熵exchange of views意见的交流exchange reserves中央银行所持有的自由兑换外汇准备exchange of paper交流本Exchange-spring交换弹性exchange the news交换新闻