读数经常是不成功的或者两个值都等于0,0，这是不能用的数据。
Frequently, the read will be unsuccessful or both values will be equal to 0, 0, which is unusable data.
这个WebSphere TX映射要解决的转换问题是，选择属于给定的数据片的所有读数quantity值，然后求出这些值的和。
The transformation problem that is solved by the WebSphere TX map is to select all of the meter reading Quantity values that belong to a given slice, and then total the values.
这些提供了用于电气故障检修的模拟值的压力和驾驶性能分析所需的数据流读数。
These provide the electrical troubleshooting analogues of the pressure and flow readings needed for driveability analysis.
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