self lubricating pump

This paper describes the main mechanical structure design of a power self-support in-pipe robot,including the designs of power self-support part,supporting wheel part and steering mechanism,which provides a very important base for studying new power self-support in-pipe robots.

详细论述了能源自给式管道机器人总体机械结构设计,包括发电蓄能部分结构设计、支撑轮组件的设计和导向机构设计,为新型能源自给式管道机器人的研究奠定了基础。

The framework and operational principle of one self-energy sun tracking equipment;

一种自给动力式太阳跟踪装置的结构及工作原理

Based on the problems of food guarantee after the transformation, this paper puts forward basic countermeasures for enhancing the ability of food supply in the ecotone of agriculture and animal husbandry.

针对农牧交错区面临的主要生态问题、当前及退耕还草后面临的粮食问题,提出了该区退耕还草后提高粮食自给能力的基本对策:改造基本农田,强化农牧结合,建立农业"三元"结构体系,充分应用现代旱作农业技术,发掘退耕还草后剩余农田粮食生产潜力。