在任何时候，看板(相当于系统中的“能量”)的最大数量都与在制品的上限保持守恒。

The maximum number of Kanbans (the "energy" in the system) is fixed and physically conserves the upper limit of WIP at any given time.

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图5所示的敏捷看板例子本身并没有实现“限制在制品的数量”、“连续流通”和“拉动式”特性。

"Limits WIP", "Continuous Flow" and "Pull" properties are not attained by the Agile Kanban example by itself, shown in Figure 5.

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你从中可以看到看板的两种含义，一是“在维持连续流通的同时限制在制品数量”，而另一种是“改善”。

As you'll see here, there are roughly two different meanings of Kanban, one is "Limits WIP while sustaining Continuous Flow", and the other is "Kaizen".

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