To delegate the test run to three remote machines, it is preferable to create three user groups, with each assigned to run on one remote machine.

在三台远程机器上运行测试，最好创建三个用户组，将每一组指派到一台远程机器上运行。

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They recruited 121 women who were planning to diet to lose weight, then randomly assigned them to one of four groups for a three-week period.

他们招募了121名计划节食来减肥的女性，然而在三周的时间内他们被分到四个小组中的其中一个。

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After a break, the groups resumed the experiment for another three weeks, with teens assigned to a different calcium intake level for the second stage.

休息后，对这组成员进行另外三个星期的第二阶段的实验，分配给青少年摄入量的钙。

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To test various strategies, researchers randomly assigned participants to one of three groups.

VOA: standard.2010.07.30

And because the three groups were randomly assigned to their diets, Estruch says that factors like the amount of exercise the participants did, or the medications they took, would be about the same in all three groups, and thus affect all participants equally.

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