缝纫机踏板机构是_________机构；破碎机是________机构；汽车前轮转向机构是________机构 汽车前轮转向机构.avi 缝纫机踏板机构.avi 破碎机.avi/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif
举一反三
- 缝纫机踏板机构是_________机构；破碎机是________机构；汽车前轮转向机构是________机构 汽车前轮转向机构.avi 缝纫机踏板机构.avi 破碎机.avi/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif
- 雷达天线为______________机构；火车车轮的联动机构为______________机构；鹤式起重机构采用的是_____________机构；汽车刮雨器采用的是_____________机构。（选择以下内容填入空格：曲柄摇杆、双曲柄、双摇杆） 机车车轮联动机构1.avi 雷达天线机构.avi 鹤式起重机构.avi 汽车刮雨器.avi/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif
- 视频1.flv/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif/js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_mv.gif
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