随着科学技术的发展 ,建筑用设备也在不断更新 ,有许多建筑设备现在都装上了自动称重仪表。如混凝土搅拌机 ,原来只是建筑工程用的搅拌设备 ,制混凝土时用机械台秤把石子、砂子、水泥分别称好放到搅拌机内搅拌 ,从而得到混凝土。而今在建筑工地出现了数字显示的水泥搅拌站 ,有 With the development of science and technology, construction equipment is also constantly updated, there are many construction equipment are now equipped with automatic weighing instruments. Such as concrete mixers, originally only used in construction equipment mixing equipment, concrete system using mechanical scales to gravel, sand, cement, respectively, stir well into the mixer, resulting in concrete. Now in the construction site there is a digital display of cement mixing station, there