双精度数的指数的偏差是1023。
双精度数是以类似的方式编码的，但是它使用52位的尾数和11位的指数来获得更高的精度。
Doubles are encoded in much the same way except that they use a 52-bit mantissa and an 11-bit exponent for higher precision.
指数函数是一个很好的例子，它表明处理有限精度浮点数(而不是无限精度实数)时是需要非常小心的。
The exponential function serves as a good example of how careful you have to be when dealing with limited-precision floating-point Numbers instead of infinitely precise real numbers. ex (Math.exp ).
所设计的计算矩阵指数的子程序保证了系统仿真精度不受计算步长的限制，从而大大提高了计算效率。
The procedure for calculating the exponential matrix guarantees that the simulation accuracy is not restricted by the calculating step length, then the calculating efficiency has been raised greatly.
应用此模型对轨道质量指数TQI数据进行分析预测，并对其精度进行检验。
Using this model, track quality index (TQI) data were predicted and their accuracy was tested.
对比指数曲线模型和双曲线模型的结果可知，幂多项式模型的预测精度均高于后两者。
According to contrast index curve model and hyperbolic model results, the power of multi- Item type prediction accuracy is higher than the latter two.
用指数函数对波浪和海冰作用下平台构件的疲劳应力、应力循环次数和环境参数的关系进行了拟合，拟合精度很好。
The exponential functions were used to reflect the relationship among fatigue stress, number of stress cycles and environmental parameters. The fitting precision of the functions was relatively high.
通过比较说明：灰色预测精度最高，指数曲线法次之，对数曲线法最低。
Through the compare we can draw a conclusion that the gray forecasting precision is the best, the exponential curve method is the second best, and the logarithmic curve method is the worst.
利用DTM最重要的是保证它的真实性， DTM精度是指数字地面模型与实际地形表面的逼近程度。
The most important thing making use of DTM is to guarantee validity; the accuracy of DTM is degree of approximation of DTM'surface and actual terrain surface.
而虚拟变量只能描述价格指数的离散变化，比如在销售淡季虚拟变量法就不能提供精度较高的分析结果。
The dummy variables can only describe discrete changes in price indices, such as selling off-season dummy variable method will not be able to provide high precision analysis.
实证结果表明，应用斯坦规则结合不同信息进行指数跟踪，指数跟踪精度得到了提高。
The experiment verifies that the tracking precision of index fund is improved after combining different information with Stein rule in the index tracking.
它使GM(1,1)模型同时适应于低增长指数序列和高增长指数序列建模，它是提高GM(1,1)模型精度和适应性的关键技术。
The new formula is suited to building GM (1, 1) model for both low growth index series and high growth index series. It is the key technology of enhancing GM (1, 1) model precision and adaptability.
依据原始矢量数据计算的土地利用景观格局指数，可以在一定程度上揭示精度损失变化特征的规律和成因。
The landscape indices, calculated from the original vector data, can indicate the law of the change of the area accuracy loss.
灰色预测系统GM(1,1)模型用于负荷按指数增长态势变化时，预测精度较高，但当影响负荷的因素较多、模型灰度较大时，精确度就不够理想。
The power load forecast accuracy is higher when GM (1, 1) model is applied for the exponential increasing load, while it is not acceptable when the load is influenced by different factors.
价格指数的变化是连续性的，而虚拟变量只能描述价格指数的离散变化，比如在销售淡季虚拟变量法就不能提供精度较高的分析结果。
Dummy variables can only describe the discrete changes of price index, for instance, using dummy variables in sales off-season can not provide upper precision estimating result.
本文给出了一个计算本质非负三角阵的指数函数的高精度算法。
In this paper, we present an algorithm to accurately compute the exponential of a triangular essentially nonnegative matrix.
利用两阶段抽样 ，构造了定数截尾数据下指数分布参数的一个置信下限 ，它同时满足预先指定的可靠度和精度。
A method is presented to calculate approximate value of confidence lower limits making use of reliability test data of torpedo components.
利用两阶段抽样 ，构造了定数截尾数据下指数分布参数的一个置信下限 ，它同时满足预先指定的可靠度和精度。
A method is presented to calculate approximate value of confidence lower limits making use of reliability test data of torpedo components.
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