惯性定理 meaning in English

inertial theorem

The newton the first laws finger object is had the character keeping original motion state , the inertia theorem is also called : under the circumstances of not accepting an outside force or being accepted an outside force by zero , the object always keeps uniform motion or motionless
牛顿第一定律指物体具有保持原来运动状态的性质，也被称为惯性定理：在不受外力或所受外力为零的状态下，物体总保持匀速运动或静止。
These changes violate newton ' s first law , the law of inertia which implies that more energy is needed to change inertia ( to overcome frictional forces and inertia ) than to maintain inertia ( to overcome only frictional forces )
这些变化违背了牛顿第一定律，也就是惯性定理在不受外力或所受外力为零的状态下，物体总保持匀速运动或静止也就是要改变物体的惯性需要额外的能量（以克服摩擦阻力和惯性）大于保持物体惯性的能量（仅克服摩擦阻力）。