On this basis, explore the participatory pattern of agricultural extension work and management of these mechanisms, in-depth participatory agricultural extension on the operating mechanism.
在此基础上，探讨参与式农业推广模式的工作步骤和管理机制，深入阐述参与式农业推广的运行机制。
Shipbuilding . sea water valves . screw - down stop - and - check valves with opening mechanism . pattern iv . operating mechanism parts list.
造船工业。海水专用阀门。带打开机构的螺杆向下止动和止回阀。式样。操作机构零件细目表。
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