质量守恒: conservation of mass质量: mass不变: invariant质量守恒定律；质量不灭定律: law of conservation of mass质量守恒: co ervation of ma; conservation of energy; mass conservation; conservation of mass质量能量守恒: conservation of mass energy; conservation of mass-energy质量守恒定理: conservation of mass theorem; mass conservation law; principle of conservation of mass质量守恒定律: law od conservation of mass; law of co ervation of ma; law of conservation of mass; ma co ervation law; mass action law; mass conservation law质量守恒方程: equation for conservation of mass; equation of mass conservation; mass conservation equation质量守恒原理: principle of mass conservation质量不变: mass conservation质量守恒定律方程: equation of mass conservation储存（使完好无损质量不变）: preserve质量不符: non-conformity of quality质量不好的: unhealthy质量不灭: conservation of mass质量不平衡: mass unbalance质量不一: uneven quality质量不一的: spotty质量不足: mass deficiency能量守恒定律；能量不灭定律: law of conservation of energy不变质量: invariant mass; relativistic mass对质量不满意: complaint about the quality高质量不褪色: a high degree of light-fastness; a highly compressed special particle board射孔质量不良: poor perforation
