According to it, sustainable development level of apple industry in Tongchuan county was diagnosed common from 2003 to 2006 and sustainable development level was better from 2007 to 2012.
2007～2012年,铜川特色苹果产业诊断结果为可持续发展程度强,警度为轻警。
参考来源 - 区域特色农业持续发展诊断预警研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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