性能的提高取决于连接键被下推时所在维度表的过滤选择度。
The performance improvement depends on the selectivity of the filter on the dimension table from which the join keys are pushed down.
当将查找(lookup)表与其他较大的分区的表相连接时,通过将查找表也进行分区,可以最大化并行度。
When lookup tables are used in joins with other large partitioned table spaces, you can maximize the parallelism in the join by partitioning the lookup tables as well.
当一个未知的信号被连接到测量装置时,例如伏特计或安培表,测量准确度则几乎完全由测量装置决定。
When an unknown signal is connected to a measuring device, such as a voltmeter or ammeter, the measurement accuracy is almost entirely determined by the measuring device.
对退化结构的时变可靠度,抗力必须表为随机过程。
The resistance of deteriorating structures is a non-stationary stochastic process.
介绍了电能表在进行电快速瞬变脉冲群(eft)抗扰度试验时的一种脉冲个数测量方法。
The electrical fast transient (EFT) disturbance test is one of the most difficult tests, because it is a fast uprising, repetitive pulse group.
选择时,应在满足生产要求的情况下尽可能选用精确度较低、经济适用的压力表。
In selecting, under the precondition to satisfy the production requirements, pressure meters with lower accuracy and economic applicability are chosen as more as possible.
加强螺柱和螺栓拉伸数据表(2124594)列出了加强各种尺寸的螺柱和螺栓时所需的拉伸度。
The stretch data for tightening studs and bolts (2124594) tabulates the stretch required for tighting each size studs and bolts.
加强螺柱和螺栓拉伸数据表(2124594)列出了加强各种尺寸的螺柱和螺栓时所需的拉伸度。
The stretch data for tightening studs and bolts (2124594) tabulates the stretch required for tighting each size studs and bolts.
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