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《Journal of Daqing Petroleum Institute》 1988-03
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ANALYSIS AND DISCUSSION OF THE SECTIONAL VIEW ABOUT NEW STATE STANDARD OF MECHANICAL DRAWING

Wang Yunzhi;Bao Yunhui;Sun Yuling Teaching Unit of Drawing  
In this paper, theoretical analysis on the conceptions, types, obtainable method, drawing method limitations of applications, differences of the new standard from the old ones and etc. is conducted for the state standard of mechanical drawing (GB4458.1-84 which was issued in 1984 and activated in 1985). It is possible to for the engineers and technicians as a reference int heir study and design.
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