很清晰喔!!影片連結:http://66.163.168.225/babelfish/translate_url_content?.intl=tw&lp=en_zt&trurl=http%3a%2f%2fwww.youtube.com%2fwatch%3fv%3dWqvzvvEMV7c%26feature%3drelated 手焊接http://66.163.168.225/babelfish/translate_url_content?.intl=tw&lp=en_zt&trurl=http%3a%2f%2fwww.youtube.com%2fwatch%3fv%3dJ9rGM7fispU%26feature%3drelated 軌道式圓週焊http://66.163.168.225/babelfish/translate_url_content?.intl=tw&lp=en_zt&trurl=http%3a%2f%2fwww.youtube.com%2fwatch%3fv%3dqM6DlrDiA_8%26feature%3drelated
