The designing methods and key points are introduced and the designing procedure is also presented in this paper. A new style single-wheel walking tractor is developed by the presented idea.
阐述了这种拖拉机的设计思想及要点，给出了主要部件的设计方法，并利用这种思想方法开发设计了新型的独轮拖拉机。
A key goal in the pilot projects will be to explore methods to track food and identify a common source or supplier starting at multiple points of sale.
项目的关键目标将是在开拓在多个销售点能追溯食品并确定其来源或供应商的方法。
The article points out the key and difficult points that students will meet when learning this course and introduces the basic methods to learn it.
指出了学生在学习本课程时的重点和难点，以及本课程的基本学习方法。
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