To establish relative perfect systems of qualified personnel training and technical extension for increasing the contribution ratio of ecological construction.
建立较为完善的人才培养和技术推广体系，提高科技对生态建设的贡献率。
Thus, the authors propose the necessary measures to establish a harmonious extension -system of water -saving agro -technique is to cultivate the demand of market.
提出了从培育市场需求拉动建立协调的节水农业技术推广体系的必要措施。
Objective: to establish the Photoelastic Model of the abutment and periodontal tissue of mandibular unilateral distal-extension edentulous restored by cantilever fixed bridge.
目的：建立单端固定桥修复下颌游离缺失的基牙及其牙周支持组织光弹模型。
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