分不開的一對 在现代工業和日常生活所應用的许多機器之中,幾幾乎不能找出一架機器,裏面連一個迥轉部份也沒有。鬧鍾的小齒輪和蒸汽機的大飛輪,機車的輪子和機床的轉轴,縫紉機的線轴和輪船螺旋浆的主轴。車廂的轴心和狄塞耳内燃機的曲柄軸——他们在工作的時候,都是要旋轉的。而在迥轉 Inseparable pair Among the many machines used in modern industry and everyday life, few can find a single machine, and there is not even a single part of it. The pinion of the alarm clock and the large flywheel of the steam engine, the wheels of the locomotive and the spindle of the machine tool, the spool of the sewing machine and the spindle of the ship propeller. The axle of the carriage and the crankshaft of the diesel engine of Dasear—they all rotate when they are working. In turn