问题描述：
英语翻译
It introduced a voting mechanism and back-off announcement to control the number of cluster-heads to vary between a small range and evenly distribute the location of cluster-heads thus to prolong the network lifetime.
出现的专业词语解释如下：
voting mechanism 投票机制
back-off announcement 退避声明
cluster-heads 簇首
network lifetime 网络生存时间
It introduced a voting mechanism and back-off announcement to control the number of cluster-heads to vary between a small range and evenly distribute the location of cluster-heads thus to prolong the network lifetime.
出现的专业词语解释如下：
voting mechanism 投票机制
back-off announcement 退避声明
cluster-heads 簇首
network lifetime 网络生存时间
问题解答：
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