coil string system 
Uhrwerk Mechanismus 
Orologio a orologeria meccanismo 
mécanisme d'horlogerie mécanisme 
relojería mecanismo coil string 7 发条 [發條] fātiáo (motion-coil) coil string: 给表上~ wind up a watch ' system 23 机制 [機-] jīzhì (machine-system) system: 民主~ the democratic system || 竞争 (jìngzhēng) ~ competitive system || 管理~ management system '
Kỹ sư giải thích cơ chế của máy. 
The engineer explained the mechanism of the machine.
Der Ingenieur erklärte den Mechanismus der Maschine.
วิศวกรอธิบายถึงกลไกของตัวเครื่อง
工程师解释了机器的机制。