The OPRA market data we use was captured in February 2008.
我们使用的是 2008 年采集的OPRA市场数据。
We refer to it as OMDP, for OPRA market data processing.
我们称其为OMDP，即opra市场数据处理。
This article introduces the methods of making Sound and Light Instrument of Dust Explosion, opra-tion process and advantages in making experimentation.
介绍了声光粉尘爆炸仪制作的方法、操作的过程和用此仪器作实验的优点。
This article introduces the methods of making Sound and Light Instrument of Dust Explosion, opra-tion process and advantages in making experimentation.
介绍了声光粉尘爆炸仪制作的方法、操作的过程和用此仪器作实验的优点。
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