1. About the new and second-hand product description: We assure you that all the products are100%working before we shipping. The new part will with original packing. Part of second-hand products will have obvious scratches on the surface. Second-hand products will be strictly tested before sh...
- 한국철도학회 학술발표대회논문집 被引量: 0发表: 2014年 Vehicle terminal, information systems, and information output method The information system (100) comprises an onboard terminal device (110) for outputting information obtained by a user's input operation, a ...
- 한국생산제조학회학술발표대회논문집 被引量: 81发表: 1996年 Development of discontinuous grinding wheel with multi-porous grooves Conventionally, grinding of aluminium, copper and stainless steel is difficult owing to the mechanical properties such as low hardness and ...