... RIL (Research Information Letter) 研究信息通讯 RI level 无线电干扰电平 rim 边，缘，齿圈，垫环，轮缘，轮，磁轭 ...
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Surveys were developed and distributed to a randomly selected sample of 10,000 clubs to identify relevance and efficacy of current RI programs at the club level.
个扶轮社中以分散随机抽样来找出扶轮社层级目前国际扶轮计划所执行的适当性及有效性。
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