0 a piece of equipment for moving heavy objects up or down, consisting of a small wheel over which a rope or chain attached to the object can be easily raised or lowered -- （用於搬運重物的）滑車，滑輪
Two continuous, stainless-steel drive wires, running in a system of grooved, free-running pulleys, supported a heavy wire frame, on which the sphere was mounted.
The two platforms are connected by six wires, whose tension is maintained by pulleys and spiral springs that are fixed on the base.
The operation dealt with in this paper is to assemble a rubber belt with fixed pulleys.
The impeller is driven by an axis which is in turn driven by the engine via the pulley.
Moreover, the generated movement tends to be specific to each problem and may be difficult to be reused for the different configuration of pulleys.
After that other objects were added with a pulley and the maximum weight was measured.
When it is necessary to change the reduced frequency, the radius of the pulley is changed.
A torsional spring, a pulley for the wire, and a potentiometer are fixed on a common shaft.
