In the teaching practice of hydraulic and pneumatic system,it is found that the graphic symbols of overflow valve and vent-type internally controlled sequence valve are exactly the same,while there are difference by analyzing the structure and function of them.In this case,it is not accurate and leads to misunderstanding to use the same graphical symbol.In order to eliminate the ambiguity,this paper added a block sign to internally controlled sequence valve.
| 
推荐 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
