The paper makes an analysis and study on the cracks found with the bottom case of ZD6-E electricpointmachine in the vibration test and gives suggestion on the improvement.
本文对ZD6电动转辙机在振动试验中出现的底壳多处断裂进行了分析和研究，并提出了改进措施。
2
As if to prove her point, Wirasinghe brings out the rusted shell of an electric sewing machine.
蚀了的电动缝纫机外壳，就好像要证明她话中的含义似的。
3
This paper introduces a new type of automatic packing machine, its functions, its electric gas circuit, its principle of works, and the main point of design.