机械能是动能与势能的总和,这里的势能分为重力势能和弹性势能。我们把动能、重力势能和弹性势能统称为机械能。决定动能的是质量与速度;决定重力势能的是质量和高度;决定弹性势能的是劲度系数与形变量。机械能只是动能与势能的和。机械能是表示物体运动状态与高度的物理量。物体的动能和势能之间是可以转化的。在只有动能和势能相互转化的过程中,机械能的总量保持不变,即机械能是守恒的。
机械能(mechanical energy)是指与物体的运动或位置高度,形变相关的能。机械能可以表现为动能,也可以表现为势能。
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二、机械能(Mechanic Energy) 动能与势能之和称为机械能 三、机械能守恒 如果只有动能和势能相互转化,则机械能的总和不变,机械能守恒。
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... valve-lifter screw 气门顶杆螺钉 Mechanical valve lifter 机械式汽门举杆 ; 机械能 Hydraulic valve lifter 液压式汽门举杆 ; 液压瓣升降杆 ; 液压式气门挺杆 ...
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机械能守恒 mechanical energy conservation ; co ervation of mechanical energy
机械能力倾向 mechanical aptitude
机械能力倾向测验 mechanical aptitude test ; mechanistic aptitude test ; SRA Mechanical Aptitudes SRA
机械能守恒定律 conservation law of mechanical energy ; law of co ervation of mechanical energy ; Journal of Physics Teaching
机械能力 [机] machine capability ; mechanical ability
机械能力测验 mechanical ability test
麦氏机械能力测验 MacQuarrie Test for Mechanical Ability
机械性能 Mechanical properties ; Mechanical capacity ; [机] mechanical property ; Mechanical performance
机械能衡算 mechanical energy balance
机械能占据主导地位,他决定了平衡的位置。
Mechanical energy rules supreme, and that's dictating where equilibrium lies.
英国有大量的煤;然而,当时还没有有效的方法来产生机械能或为机器提供动力。
Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
发电机使机械能转换为电。
When you don't have to worry about criteria like that ordinary, mechanical energy rules supreme, and that's dictating where equilibrium lies.
如果你不担心像这样的要求,通常的机械能就占据主要地位,并且决定平衡位于何处。
This is visualizing the process of the conversion of mechanical energy into chemical and electrical energy very nicely.
这一模拟恰到好处地演示了,机械能到化学能和电能的转换过程。
In some sense, that's one reason to associate this as a kind of energy, H just like mechanical energy u or enthalpy H, it's the minimum free energy state that is the equilibrium state under the relevant conditions.
在某种意义下,这是我们把这些物理量称为能量的原因,就像机械能U和自由焓,具有最小自由能的状态在特定的条件下,就是平衡态。
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