Kneeling in front of the open hearth, old Maria was fanning the smoldering fire...老玛丽亚跪在壁炉前的空地上，扇着闷燃的炉火。Other people were kneeling, but she just sat.其他人跪着，而她只是坐着。He was kneeling on the floor pleading for mercy...他跪在地板上请求...
他说：“我从未故意将任何病人置于不必要的风险境地。”"I have never knowingly exposed any patient to needless risks," he said.为什么我们要为酒吧和宾馆不必要的暖气开支买单呢？Why do we pay to overheat pubs and hotels?对鲸的野蛮屠杀既不必要也不人道。The barbaric slaughter of whales is unne...
A cogging torque measurement system was proposed , which was composed of stepping motor, torque sensor, etc.提出了一种由步进电机 、 转矩传感器等元件组成的齿槽转矩测试系统.However, their cogging torque or unbalanced radial force is usually high, deter...