动差 meaning in Chinese
[统计学] moment
◇动差法 method of moments
Examples
- The expected value of a positive integral power of a random variable . the first moment is the mean of the distribution
矩，动差任意变量的正整数功效的期望值。第一个矩是分配的平均数 - The moment equations are developed which provide the mean , variance and skewness of carbon dioxide concentartion
最后所推导出之动差方程式更可推算出二氧化碳浓度之平均，变异数及偏态系数值。 - To decrease the discrepancy , it is important to study the mechanism of the dynamic error and the method of eliminating or correcting the error
为减少静动差，研究铜柱测压动态误差的形成机理，研究消除或修正动态误差的方法，具有重要的实用价值，它将给百年老技术注入新的生命力。 - In our country the method of pressure - measuring with copper cylinders adopts the system of static calibration on the whole . the serious static - dynamic discrepancy will be caused when the copper cylinders statically calibrated are used to measure the dynamic chamber pressure
我国的铜柱测压法基本上仍沿用静态标定体制，而静标铜柱用于动态膛压测量会产生严重的静动差。 - The static - dynamic error can be decreased effectively by the quasi - dynamic calibration which is the direction of improving calibration system of plastic pressure - measuring elements . despite the development of more than twenty years , there are still many problems to be further studied
准动态校准技术可有效地减小静动差，是塑性测压器件校准体制的改革方向，虽经二十多年的发展，但还存在许多有待进一步研究的问题。