Therefore, researching on the MAC layer protocol is quite common and having important meaning.

因此针对MAC层协议的研究是相当普遍的，而且具有非常重要的意义。

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This research is having important meaning, to promote capability improving and function expanding for electronic automatic packing balance, to change for measuring production process automation.

该项研究将有助于促进电子自动包装秤的性能提高和功能扩展，对计量生产过程的自动化改造也具有重要的意义。

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"Difference" or contradiction is important, having a meaning of dynamics.

“异”或矛盾是重要的，具有动力学意义。

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In a survey of over 6, 000 women carried out by the Royal College of Midwives and NetMums last year, 61% said their midwife did not have enough time to discuss their concerns about weight management and nutrition, meaning many women may embark on pregnancy without having discussed how to manage their weight at this important time.

BBC: Fat, pregnant or both?