随机法

Probability proportional sampling conducted according to various school sizes was used in this study to select subjects from all school nurses working at the elementary and junior high school levels.

研究采横断性调查法，研究工具为结构式问卷，采邮寄问卷方式以等比例分层随机抽样针对全国各学校单位之学校卫生护理人员进行抽样调查。

Methods: Experimental study gastric ulcer models were established through the ligation of pylorus in mice.

采用幽门结扎法造成大鼠消化性溃疡模型，随机分为四组。

By comprehensively using IDEFO, Stochastic Process, Queuing and Petri Nets, the author designed multi—microprocessor CNC system and evaluated performance of the system.

作者综合使用IDEFO法、随机过程、排队论及Petri网等数学工具，设计出多微处理机数控系统，并对它进行了性能分析。

Results Analyzing the non-randomized clinical trial data with quintile stratif...

结果使用五等分分层法对临床试验中的非随机化数据进行处理，分层前两组协变量间的不均衡在分层以后达到了均衡。

Secondly, the simulated tempering annealing based random field model of the DTI image is studied.

第二，研究了基于模拟回火退火法的DTI随机场模型。

According to the random number table is divided into 30 cases of the test group and control group of 30 patients.

按随机数字表法分为试验组30例，对照组30例。

Methods Methods random sampling of patients will be divided into two groups of 130 cases.

采用随机抽样法将患者分成两组，每组130例。

Methods Using random sampling method,the patients were divided into two groups and each group had 25 cases.

采用随机抽样法将患者分成两组，每组25例。

MethodsA random sampling of 130 type 2 DM patients was used in this study.

方法采用随机抽样法对糖尿病患者进行问卷调查，以明确影响糖尿病患者血糖控制的行为因素。

The method of sampling took Stratified Random Sampling. There are 240 valid questionnaires in 300, sum up to 80%.

本研究采取分层随机抽样法，共发放问卷300份，得有效问卷240份，有效问卷率为80%。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新