匹配组 meaning in Chinese

matched groups

Objectie . the purpose was to ealuate the influence of pain distribution on ertical grf of patients with low back problems during 2 walking speed conditions : preferred and fastest speeds
研究设计：通过对只有背部疼痛组，背部疼痛并牵扯到腿部组，及正常对照组3个性别年龄相匹配组进行两种步行速度的对比，来横向分析垂直地面反应力。
It shows that the parallel implementation of the program is successive , a speedup 6 . 33 performed on 8 nodes was obtained , and a very large mrci calculation with 5 . 8 10 ^ 8 csf has been carried out on 12 nodes
测试表明，程序的?行化基本上达到了预期的结果， 8个结点的加速比达到6 . 33 ，在12个结点上成功地完成了5 . 8亿自旋匹配组态的超大规模mrci计算。