量筒是实验室常用测量体积的仪器,但只要同学们善于思考,量筒还有其它的妙用。1“量”数量例1有一盒体积相同的大头针,利用量筒你能快速量出它的数量吗?方法:(1)向量筒加入适量的水,记下体积为V1;(2)从盒中取出100枚大头针轻轻浸没水中,水和100枚大头针的总体积为V2;(3)将盒中 Measuring cylinders are commonly used by the laboratory to measure volume, but as long as students are good at thinking, there are other magical effects of measuring cylinders. 1 “Quantity” Quantity Example 1 There is a cartridge of the same volume. Can you measure the quantity quickly by using a graduated cylinder? Method: (1) Add a proper amount of water to the vector cylinder, note the volume as V1; (2) From the box Remove 100 pins and gently submerge the water. The total volume of water and 100 pins is V2;