1·Way back in 1495, Leonardo da Vinci designed what was probably the first robot - an automated suit of armor with a windup crank.
回到1495年，列奥纳多·达芬奇设计了也许是世界上第一台机器人——一整套用曲柄发条驱动的自动盔甲骑士。
2·The body is built from balsa wood, and the wings powered by a wire crank driven by a rubber band.
燕尾蝶的身体是用轻木做的，而翅膀的动力来源为用橡皮圈驱动的金属曲柄。
3·To start the engine, one must first light the small flame beneath the hot ignition tube and crank the engine once using the crank; these preparations take only a minute.
要启动发动机，首先得点燃热管，再转动曲柄轴，发动机便启动，这些准备工作只需一分钟。
4·Finding involved inadequate corrective actions to prevent repeat failure of the number nine main crank shaft bearing on emergency diesel generator number one.
发现物涉及到不充分的，纠正措施，用来避免重复的失效，那是关于，9号大曲柄轴，在第一号柴油机。
5·Affix using one of the crank arm fixing bolts.
词缀使用其中的一个曲柄臂固定螺栓。