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活塞-凹坑钳-------------------Trung t?m?o t?o SolidWorks-H?c?KhíH?c phí990k，链接视频：https://www.youtube.com/channel/UCn5JjQndpMfqBaFVY3FNQ6A/videos奥特?o AutoCAD、MasterCam、发明家网站：www.hoccokhi.vn热线：033.666.2767电子邮件：hoccokhi。info@gmail.comFanpage：Facebook.com/HocCoKhi/Youtube:H?c c?KhíChi nhánh 1:48/14/5??ng s? 6，Bình H?ng Hòa B，Bình T–n，HcmChi nhánh 2:58 H?吴?, Bình Th?, Th? ??c