However, the study lacked a control group and used nonrandom sampling, they noted.

然而，这项研究缺乏一个控制组并且采用的是非随机抽样，他们表示。

A control chart may indicate an out-of - control condition when some nonrandom patterns occur.

当管制图中出现非随机性模型时，表示制程可能正处于管制外。

In information theory, the average information content-a measure of nonrandom ness in a signal.

在信息论中，信息容量的平均数——信号非随机性的量度。

Methods: Nonrandom purposive sampling was used to select key respondents to conduct indepth interview.

方法：采用非随机、目的抽样方法选择被访者，对关键知情人进行个人深入访谈。

The evidence suggests that not only is it nonrandom and parochial, but it is difficult to come by at all.

这种迹象表明，变异不仅是非随机的、范围有限的，而且根本就是很难获得的。

The high frequency of giant submetacentric chromosome in Hodgkin's disease revealed that it was nonrandom chromosome abnormality.

巨大亚中着丝粒染色体以较高的频率出现在何杰金氏病中表明它是非随机性的染色体异常。

Because random process theory is not an assumed prerequisite for this text, emphasis will be on deterministic (nonrandom) lumped parameter systems.

因为随机过程理论并不是本课要求的先修课程，所以本课的重点将放在确定性(非随机)的分段集中参数系统上。

The numerical results for a group of roughly estimated parameters show that the proposed model may be able to explain the nonrandom usage of synonymous codons.

对干一组粗略估计的参数进行数值计算的结果表明，本文提出的模型能较好地解释同义密码于的非均匀使用问题。

We have found that alien invasive species' DNA sequences are nonrandom, and the signatures are specific: the closer the species are, the more similar the signatures will be.

通过对不同入侵物种基因签名的分析比较，发现入侵物种的DNA序列非随机，基因签名具有物种特性，且物种越近，签名越相似。

The restricted access mechanism meets the request of nonrandom matching and is favorable for setting up repeated game and trust mechanism and also favors contract management.

限制性进入机制符合非随机配对的要求，并有利于建立重复博弈和信任机制，有利于契约管理。