Artificial muscles seem unlikely ever to be able to compete with hydraulic actuators for strength, or combustionenginesfor speed and torque.
比力量,人造肌肉似乎永远不可能比得上液压致动装置,比速度和扭矩,人造肌肉似乎又比不上内燃机。
2
That's because fermenting corn into ethanol delivers less liquid fuel energy for internal combustionengines than does burning the kernels to generate power for electric motors.
因为,将玉米发酵后作为内燃式引擎的燃料所提供的能量,要比将其燃烧后发电提供给电机的能量少。
3
The potential for increasing engine efficiency is substantial and even greater when coupled with advances in internal combustionengines.