给你一只杆秤,请你称出秤砣的重量.你定会说:称东西就是用秤砣,而称秤砣又得把它放进秤盘里.一只秤砣,岂能两用?谁也称不了?别那么说!我就能称?(1)随手拾草棍儿一根,(树枝、细绳全行)将其一端与提纽刀口对齐,再看挂重物的刀口与草棍所对位置,并从该处折断,扔掉多余部分.(2)将所折得的草棍儿的一端与定盘星(即零刻度处)对齐,再看草棍儿的另一端在秤杆上所对的刻度值,该刻度所代表的重量便是秤 Give you a steelyard scale, and ask you to weigh the weight of the scale. You would say: Weigh the scales, and we must put it in the weighing pan. Weighing one scale, can we use it for two purposes? Can’t you say that? Can you name it?(1) Pick up a stick and put one end of the stick (line of branches, string) in line with one another, and look at the knife edge and grass stick. Take the position and break from there, throw away the excess. (2) Align one end of the folded straw with the fixed star (that is, the zero mark) and the other end of the straw on the balance bar. The scale value of the scale, the scale represents the weight is the scale