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本刊’９８—８所刊《关于机械制图新旧国标中螺纹和螺纹紧固件表示法的对照》一文（下称一文），对ＧＢ／Ｔ４４５９１—１９９５的内容作了介绍，将新旧标准进行对比，对正确理解和贯彻新标准是有益的。但是文中一些地方不够明确或有误，值得提出研究和改正。在技术工...
The article ’98 -8 published “on the old and new national standard mechanical drawing of the thread and the representation of the screw fasteners,” a text (hereinafter referred to), the contents of GB / T4459 1-1995 were introduced, the old and new standards It is helpful to correctly understand and implement the new standards. However, some places in the text are not clear or incorrect enough and it is worth studying and correcting them. In the technical work ...