Smart electric trolley, the source and circuit diagrams, some functions have been achieved, other functions need perfect!(智能電動小車，源程序和電路圖，部分功能已經實現，其他的功能還需要完善！)

Grasshopper is a foldable electric bicycle that turns into a trolley for easy transport. The use of composite materials provides rigidity and strength.(蚱蜢自行車是一種可折疊的電動自行車，它可以被折疊成手推車形，便于攜帶。復合材料的使用，保證了其硬度和強度。)

The utility model relates to a vacuum contactor-fuse combined electric appliance, particularly a hand trolley type horizontal pulling and isolating switch device.(本實用新型一種真空接觸器-熔斷器組合電器，涉及手車型水平拉引隔離的開關裝置。)

Taking tapping trolley as an example, it introduces the adjustment procedure of the electric system and troubleshooting as well.(以出鋁小車行走為例介紹了多功能天車電氣系統的調試過程和常見故障處理。)

It added bright colorful lights, electric trolley cars, electric heat and refrigerators to our modern world.(它給我們現代社會增加了色彩繽紛的燈光，電車，電暖氣和電冰箱。)

Accurate gauge of electric energy that trolley buses consumed is realized via the intelligent Watt-hour meter, making the scientific management of trolley bus power possible at the same time.(實際應用表明，該電能表可以實現無軌電車用電的準確計量，同時為用電的科學管理打下了基礎。)