你曾为每天繁琐的校园卫生清理而烦恼过吗?城市、车站、机场、广场的卫生清理不但需要大量的物力、财力,更需要清洁工人付出艰辛的劳动。能否设计、制造一台不烧油、不用电,省时省力、高效环保,适合清扫这些宽阔场地,寓繁琐劳动于轻松快乐之中的简易清扫机呢?一、材料准备大铲斗一个、车轮四个(两大 Have you ever troubled the tedious campus sanitation every day? The clean-up of sanitation in cities, stations, airports and squares not only requires a lot of material and financial resources, but also the hard work of cleaners. Can design, create a not burning oil, no electricity, time-saving, high efficiency and environmental protection, suitable for cleaning these spacious venues, tedious labor in the easy and happy of the simple sweeping machine? First, the material preparation big bucket a , Four wheels (two big