即使只有一个节点是活动的，完全运行的节点也会由于网络故障丢失它与同级系统之间的连接，或者，如果两个非活动的同级系统同时暂停，资源将被自动释放。
Even if a single active, 100% operational node loses connection to its peer systems due to network failure or if both the inactive peers halt simultaneously, the resource will be voluntarily released.
PERT网络图中一个代表主要活动的完成的节点。
End points that represent the completion of major activities in a PERT network.
本文论述了在网络活动节点编号已知的情况下，利用微机自动绘制网络的方法性问题。
This article discusses how to make use of microcomputer system to draw network graph when the number of the network activity nodes are known.
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