我们知道,物体所含物质的多少叫质量.不同的物体质量的大小可能不同,那么我们如何测量物体的质量呢?生活中,我们到市场买粮、买菜,售货员用秤称量物体的质量;而在学校的实验室中,我们常用天平称量物体的质量.下面就让我们一起了解天平使用的“秘密”吧.天平使用前的放置与调节图1为托盘天平的结构示意图.在天平使用前,首先应将天平放置 We know that the amount of material contained in an object is called quality, and the quality of different objects may be different in size. How do we measure the quality of an object? In life, we buy food in the market, ; In the school’s laboratory, we often use the balance to weigh the quality of the object. Let us understand the balance used below “secret ” before the balance of the placement and adjustment Figure 1 shows the structure of the pallet balance. Before using the balance, the balance should first be placed