Official PPI data based on the current reference base are not available on previous index reference base periods.
基于当前参考基准的官方生产者物价指数数据在以前的指数参考基准期是不可用的。
The mobile client may selectively to intercept the channel by the index broadcast, the average cost can be reduced through the establishment base on the data accessing probability of the index tree.
采用索引广播的方式可以使移动设备选择性地侦听信道，通过建立基于数据访问概率的索引树，以降低平均访问代价。
Through the introduction of constitution of the periodical array and data base of scientific index, scientific and technological periodical quotation and evaluation norms are recognized.
通过对期刊方阵构成 ，科学指数数据库的介绍 ，认识科技期刊引证及评价指标 ；了解地球科学类期刊的划分排序及中国地震局数据中心的科学查新。
Through the introduction of constitution of the periodical array and data base of scientific index, scientific and technological periodical quotation and evaluation norms are recognized.
通过对期刊方阵构成 ，科学指数数据库的介绍 ，认识科技期刊引证及评价指标 ；了解地球科学类期刊的划分排序及中国地震局数据中心的科学查新。
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