GbEng
他把刀子当杠杆用. He employed his knife as a lever.
支撑的位置如杠杆上的位置或某人的双脚等用于移动或支撑重量的位置 A position, as of a lever or one's feet, affording means to move or secure a weight.
千斤顶,起重机通过杠杆、螺丝钉或水的压力把重物提起的便携式装置 A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.
踏板一种由脚操纵带动圆周运动的踏板或杠杆,如制陶者的陶车或缝纫机的踏板 A pedal or lever operated by the foot for circular drive, as in a potter's wheel or sewing machine.
机械装置一个简单装置,如杠杆、滑轮或斜面刨,可以改变作用力的大小或方向或同时改变;简单机械装置 A simple device, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine.