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farmland monitoring
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farmland monitoring
Encyclopedia
农学
农田监测
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farmland monitoring
农田监测
通过规定或推荐的技术方法监测农田土、水、气环境以及农用投入品的施用情况的活动。目的是判定农田肥力和农田环境质量,为控制农田环境质量、预防农田环境污染提供依据。
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pinhole
pinhole array
pinhole camera
pinhole collimation
pinhole filter
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