排序方式: 共有6条查询结果,搜索用时 0 毫秒
1
1.
对我国农用运输车的概念作了进一步深入阐述,并在科学理论基础上,提出了农用运输车应具备的特色技术,特别提出对农用运输车的越野性能要有足够的重视。 相似文献
2.
3.
4.
在弹性胎面和刚性胎体假设的基础上,分析了非稳态条件下印迹侧向变形的几何关系和印迹侧向“入口/附着”条件。根据非稳态侧偏刷子模型和不同侧向输入间的几何关系,进一步分析了轮胎非稳态转偏刷子模型的建模机理,并推导出稳态转偏刷子模型。还分析了轮胎侧倾滚动时侧向变形以及轮胎滚动半径与垂直变形随横向坐标的变化关系。讨论了考虑胎宽时轮胎稳态侧倾刷子模型的建模过程。 相似文献
5.
6.
AbstractPresent study was designed to estimate the average monthly production rate of Ae. aegypti in a rainwater filled bus/truck tire (1.041?m) and car tire (0.737?m) as well as in bus/truck tire lodged with pondwater which are lacking. An average of 3957 Ae. aegypti propagated from single rainwater filled bus/truck tire which was significantly higher than the average number of them produced in a rainwater filled car tire and a pondwater lodged bus/truck tire in a rainy month. Higher water holding capacity might be the cause of difference between the bus/truck tire and the car tire. On other hand, difference in multiple physio-chemical aspects between rainwater and pondwater seemed to be the determining factor to make difference in mosquito breeding potential in a bus/truck tire. It is assumed from the present study that an open dumping ground of discarded tires may account for huge production of Ae. aegypti. Discarded tires are recommended to be kept under shade or covered with polythene-sheet or apertures be made underside each tire for draining out the accumulated rainwater. 相似文献
1