本刊2005年第12期刊登了《机械能守恒有相对性吗?》一文(以下简称[1]文),其中谈到“机械能具有相对性,但机械能守恒却不具有相对性,也就是说,在一个惯性系中如果机械能守恒,那么在另一个惯性系中机械能也守恒.”笔者认为这一观点值得商榷,下面从理论上加以分析.1机械能守恒定律 In the 12th issue of the magazine, published in 2005, is “A Relativity of Mechanical Energy?” (hereinafter abbreviated as [1]), which says that “mechanical energy is relative, but mechanical energy is conserved but not relativistic, that is to say, In an inertial system, if mechanical energy is conserved, mechanical energy is conserved in another inertial frame." The author believes that this view is debatable. The following is a theoretical analysis.1 The conservation of mechanical energy