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·考点复习·一、质量及其单位1 各种物体都是由物质构成的 ,质量是表示 的物理量 .质量是物体本身的属性 ,不随物体的、和的改变而改变 .2 在国际单位制中 ,质量的单位是,常用的单位有、、等 .它们之间的换算关系是 :1吨 =千克 ;1千克 =克 ;1克 =毫
·Review of Test Centers ·Quality and Units 1 Various objects are composed of substances. Mass is the physical quantity expressed. Quality is the property of the object itself and does not change with the changes of the object and the system.2 In the International System of Units The unit of quality is that the common units are,,, etc. The conversion relationship between them is: 1 ton = kg; 1 kg = gram; 1 gram = 1 millimeter