Specifies whether the constraint is initially deferrable 指定约束最初是否可以推迟。
2.
Specifies whether the constraint is deferrable 指定约束是否可以推迟。
3.
Whether the constraint is deferrable 约束是否可以推迟。
4.
The other is train communication network . based on the protocol of " iec 61375 - 1 " , published by iec in 1999 , the data to be transmitted is classified into urgent periodic variables and deferrable random messages . in this paper the whole net is decomposed into two layers : train bus and vehicle bus 文中参考iec组织1999年公布的“ iec61375 - 1 ”标准协议，将整个列车网络分为连接各个车厢主机的上层列车总线网和连接单个车厢内负责控制、检测等子设备的下层车厢总线网，同时将传输的数据类型区分为实时的周期性过程数据和可延迟的偶发性消息数据。
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