机械效率
机械效率（英语：mechanical efficiency），是机械输出功（有用功）和输入功（动力功）的比值。用公式表示为，
由于大多数机械是在接收输入功的同时就输出功，而且输入输出的快慢也互相适应，所以机械效率又可定义为：输出功率
与输入功率
的百分比，即
。在初中物理，机械效率被定义为有用功
与总功
的比值，即
Mechanical efficiency
中文百科
英语百科
Mechanical efficiency 机械效率
Mechanical efficiency measures the effectiveness of a machine in transforming the energy and power that is input to the device into an output force and movement. Efficiency is measured as a ratio of the measured performance to the performance of an ideal machine:
- spontaneous respiration的意思
- spontaneous respirations的意思
- spontaneous rest的意思
- spontaneous restoration的意思
- spontaneous resuscitation rate的意思
- Spontaneous Rhinorrhea,Cerebrospinal Fluid的意思
- spontaneous rhythmic motor unit potential的意思
- spontaneous rupture的意思
- spontaneous rupture of esophagus的意思
- Spontaneous rupture of fetal membranes的意思
- Spontaneous rupture of membranes的意思
- spontaneous rupture of membranes,spontaneously ruptured membranes的意思
- spontaneous rupture of mesenteric vessel的意思
- spontaneous rupture of round window membrane的意思
- spontaneous rupture of tendon的意思
- spontaneous rupture of visceral blood vessel的意思
- Spontaneous Ruptures的意思
- spontaneous scattering的意思
- spontaneous second degree A V block distal to bundle of His的意思
- spontaneous segregation的意思
- spontaneous selection的意思
- spontaneous septicemia的意思
- spontaneous septicopyemia的意思
- spontaneous seroallergy的意思
- spontaneous sinus node depolarization的意思