我国现有的冷链监测技术手段主要以人工测量和纸面记录为主，无统一数据系统支持，无法进行预警、损失率大。

The monitoring technology in cold chain of China is mainly artificial measurement and paper-based records, and has no unified data system to support, can not warning early, so has a large loss rate.

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大部分数据库系统支持时间戳运算。

Most database systems support timestamp arithmetics.

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大致可分为两条路：系统支持巨大的平行处理（MMP），或那些可以利用柱形储存的数据库。

Those options fall into two camps: systems supporting massively parallel processing (MPP), and those harnessing column-store databases.

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