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2009年3月11—12日,来自北京顺义区、大兴区的农机服务中心代表、农机服务组织代表和农机用户等100余人
From March 11 to 12, 2009, more than 100 representatives from agricultural service centers in Shunyi District and Daxing District of Beijing, representatives of agricultural service organizations and agricultural machinery users