产品待办事项列表代替了传统的需求文档，比如市场和产品的需求规格说明书。
The product backlog supersedes traditional requirements artifacts, such as market and product requirements specifications.
对常用的几种电梯列表给出电源开关、供电线路规格和在规定的电压损失下的供电距离。
The paper lists power switches, specifications of power supply line and power supply distance under specified voltage loss for commonly-used elevators.
产品订购：参照规格列表的标记说明订购。
Product Order: Refer to the list of tag specifications note order.
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