When the viscosity of the liquid delivery higher, or when the system work in a cold environment, we must ensure that the transmission medium can flow smoothly.
当输送液体的粘度较高，或当系统在寒冷环境工作时，必须确保输送介质能够顺畅地流动。
As a kind of young medium, Internet baa become a transmission method that cannot be overlooked.
作为一种新兴的媒体，互联网已成为一种不容忽视的传播方式。
The medium access control Technology focuses on multi-address access, that is, how to coordinate users sharing a common channel to achieve efficient and reliable transmission.
媒体接入控制技术的核心问题是如何协调多个用户共用一个信道实现高效可靠传输，即多址接入问题。
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