The utility model has the advantages that the roller vegetable skewer saves labor and time, has high vegetable hole diggingefficiency and simple structure and is economic and practical.
本实 用新型的有益效果是，节省人力和时间，挖菜穴的效率高，结构简单，经济实 用。
2
Combined with the electric transmission line of East Gansu, this paper discusses the application and economic efficiency of digging foundation.
本文主要是结合陇东输电线路，探讨掏挖式基础的适用情况和经济效益。
3
According to the basic theory of vibration, the article considers that vibration in the process of excavation can reduce the digging force and improve the energy efficiency greatly.