Vaccination to control community-wide outbreaks is most successful in small communities, when the campaign is started early and when high coverage of multiple age groups is achieved.
通过免疫接种来控制全社区的疫情。如果及早开展接种运动并且在多个年龄人群中实现高覆盖率，在小社区取得成功的几率极大。
For communication among parallel print port of PC and multiple single-chips, interface is divided into data, state and control groups respectively controlled by each register.
PC并行打印口与多台下位单片机的通讯，将接口分成数据、状态、控制三组，由其寄存器分别控制。
Howeer, in the other RCT, no statistically significant differences between treatment and control groups were shown for multiple outcome measures.
然而在另一个随机对照临床研究中，治疗组与对照组多项结果无显著统计学差异。
The frequencies of GSTM1-null and GSTT1-null genotypes in colorectal tumor and control groups were ascertained by using polymerase chain reaction (PCR) and multiple-PCR techniques.
应用聚合酶链式反应（PCR）、多重PCR方法检测GSTM1和GSTT1在正常人群和结直肠肿瘤患者群体中的基因多态性分布。
The frequencies of GSTM1-null and GSTT1-null genotypes in colorectal tumor and control groups were ascertained by using polymerase chain reaction (PCR) and multiple-PCR techniques.
应用聚合酶链式反应（PCR）、多重PCR方法检测GSTM1和GSTT1在正常人群和结直肠肿瘤患者群体中的基因多态性分布。
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