Aviation Dictionary
پین میل لنگ ،آن قسمت از یک میل لنگ که شاخه ها را به هم وصل میکند
The portion of a crankshaft to which the connecting rod is attached. The force produced by the expanding gases pushing on the piston is applied to the crankpin by the connecting rod. The crankpin travels in a circular path and causes the crankshaft to rotate.