瑞士精密机械加工有多牛？这盘子里包含4000多个零件

<iframe class="video_iframe" data-vidtype="2" allowfullscreen="" frameborder="0" data-ratio="1.7666666666666666" data-w="848" scrolling="no" data-src="http://v.qq.com/iframe/player.html?vid=n0541qxe8nd&width=370&height=208.125&auto=0" width="370" height="208.125" data-vh="208.125" data-vw="370" style="display: none; width: 370px !important; height: 208.125px !important;"></iframe>↓↓↓点击下方「阅读原文」进入制造原理商城