A pipe may define an inbound flow (receiving messages into the micro broker) and an outbound flow (sending messages out of the micro broker).

管道可以定义入站流(接收消息到微代理中)和出站流(从微代理向外发送消息)。

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Comparative analysis under the same conditions in the micro-tube and macro-size pipe flow differences, come to flow advantage of micro-size pipe.

对比分析了在同等条件下微尺寸圆管和宏观尺寸圆管内流动的差别，得出微尺寸圆管内流动的优势。

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