Occurring sequentially from top to bottom, within each iteration, r, d, c, and t represent some of the standard disciplines executed in each iteration (Requirements, Design, Code, and Test).
在每个迭代中从上到下顺序发生的R、D、c和t表示在每次迭代中执行的一些标准规程(需求、设计、代码和测试)。
The roles down the side are Requirements (R), Design (D), Code (C), and Test (T).
在一边的任务是需求（Requirements，R）、设计（Design，D）、编码（Code，C）和测试（Test，T）。
Our innovative R&D team and industry experts will design a completely new professional product or cleaning procedure for you, to solve your individual problems.
和黄白猫的专业研发团队和行业专家可以为客户单独设计一款全新的专业产品或特殊的清洁程序，解决此类问题。
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