Their arrangement puts two sensors at each intersection: One measures incoming flow and one measures outgoingflow.
按照他们的安排，每个交叉路口设置两个感应器：一个测量驶入车流量，另外一个测量驶出车流量。
2
These flows are stateless; in general, a message comes in, the flow performs various operations on the message, then an outgoing message is sent.
这些流是无状态的；通常情况下是消息传入，流对该消息执行各种操作，然后发送传出消息。
3
Once you have completed the wizard your DataPower box will be able to decrypt incoming messages to your flow and encrypt outgoing messages from your message flow.