These systems use either a line, a hand operated crank, or a hydraulic or electric powered furler.
The design's key features were machine loading of prepared cartridges and a hand-operated crank for sequential high-speed firing.
Hand-crank trikes use a hand-operated crank, either as a sole source of power or a double drive with footpower from pedals and hand-power from the hand crank.
The earliest hand-operated cranks appeared in China during the Han Dynasty ( 202 BC-220 AD ), as Han era glazed-earthenware tomb models portray, and was used thereafter in China for silk-reeling and hemp-spinning, for the agricultural winnowing fan, in the water-powered flour-sifter, for hydraulic-powered metallurgic bellows, and in the well windlass.
It's difficult to find operating crank in a sentence. 用operating crank造句挺難的
