第二个原因在于信用衍生产品的大量增长，它们给予投资者在国债市场抽样的能力，从而使得投资者只暴露于他们觉得有吸引力的精确风险之下。
A second reason is the massive growth of credit derivatives, which has given investors the ability to sample the debt markets so as to get exposure to the precise risks they find attractive.
但是，如果关系数据值是高度聚集的，那么行级抽样可以产生更精确的统计信息。
But, row level sampling may produce more accurate statistics if relational data values are highly clustered.
首先介绍了贝叶斯抽样方案的原理，给出批量较小时这类方案的简单精确算法。
This theory of Bayesian sampling plans, Then gives simple and exact algorithms of this kind of plans for small lot sizes.
第二章的内容是关于再抽样均值序列的精确渐近性质。
The content of the second chapter is about precise asymptotics of bootstrap means.
即时处理替代模拟系统也许能相当小、便宜而且精确，能够以一定的足够的抽样速率处理模拟信号。
Real-time replacements for analog systems may be just as small, cheap, and accurate and be able to process at a sample rate adequate for many analog signals.
共划分为四类区域，分层抽样，进而得出较精确的调查结果，为进行宏观分类评价和制定防治策略提供了数量依据。
A concise result was obtained by sampling, which provided specific data for the macro-classification and evaluation and for working out strategies to control the stored product insects.
通过不同抽样方式的精确度比较，表明对角线抽样方式最佳。
Sevetal sampling methods were compared and the results showed that the diagonals...
通过不同抽样方式的精确度比较，表明对角线抽样方式最佳。
Sevetal sampling methods were compared and the results showed that the diagonals...
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