Properties and reference hierarchy for product data exchange - part 5 : units for quantitative properties 产品数据交换特性和基准系列级.第5部分:定量特性单位
2.
High logical connectivity is another advantage of dtm ' s multichannel interface and switching features ; network nodes can easily be connected with nodes other than their physical neighbors 高度的逻辑连接是dtm多信道接口和交换特性的又一优点，网络节点很容易与其它非物理相邻的节点相连。
