界面变更需求 change request: 变动请求; 变更请求; 变更要求ccr communication change request: 通信改变请求change-direction-request indicator: 换向请求指示符communication change request: 通信更改请求contract change request: 合同更改的请求; 合同更改请求; 请求更改合同下载手机词典可随时随地查词查翻译