The mission that this article wants to solve is how to develop the OPC historical data access Server.
本文要解决的任务就是如何开发OPC历史数据服务器。
OPC historical data access Server provides a kind of standard mechanism of data access for the users who are interested in historical data.
OPC历史数据服务器提供了一种标准的历史数据访问机制给那些对历史数据感兴趣的用户。
Scrubbed geolocation data after two weeks and no way to access historical information at all?
两星期之后过滤掉地理信息，并且根本无法访问历史信息？
By examining historical price data as mobile-phone coverage was extended down the coast between 1997 and 2001, Mr Jensen was able to show that access to mobile phones made markets much more efficient.
通过考察1997至2001年间，当移动电话的覆盖范围逐渐扩展到这个海岸时的历史价格，詹森先生能够表明手机的到来使市场更有效率。
Access to historical data, found in northern Shanxi Fort, regardless of location, size, structure and materials are different, the defense function is also somewhat different.
查阅史料，发现晋北堡寨，无论选址、大小、结构和材质都不尽相同，因此防卫功能也有所区别。
Access to historical data, found in northern Shanxi Fort, regardless of location, size, structure and materials are different, the defense function is also somewhat different.
查阅史料，发现晋北堡寨，无论选址、大小、结构和材质都不尽相同，因此防卫功能也有所区别。
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