You need to track the release as it moves through each environment: development, integration, operational acceptance testing, user acceptance testing, staging, and production.
您需要跟踪发布版本在以下每个环境中的情况：开发、集成、操作接受度测试、用户接受度测试、过渡和生产环境。
Iteration T1 then allowed subject matter experts to conduct user acceptance testing and sign off on the system before it was released into production.
迭代t1允许主题专家在产品向生产发布之前，在系统上实施用户体验测试并且停止活动。
As mentioned earlier, pre-production might also be used for User Acceptance Testing.
正如前面所提到的，预生产还可能用于用户接受测试。
Too often, a myriad of problems arise the first time a project has to coax its way into system testing, and then into user acceptance testing, and then fumble its way into production.
大量的问题往往来自首次引入系统测试、用户验收测试、在生产环境摸索的项目。
Acceptance testing equipment for production of liquid propellant.
生产液体推进剂用的验收试验设备。
Acceptance testing equipment for production of liquid propellant.
生产液体推进剂用的验收试验设备。
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