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(一)、国家标准“机械制图”自71年1月7日颁发试行,现已三年多,根据各方面的要求和意见。国家标准制图小组进行了试行标准转正的工作。现已颁发为正式标准。 正式标准包括下列八个标准: GB126一74 机械制图 一般规定; GB128—74 机械制图 图样画法;
(A) The national standard “Mechanical Drawing” has been issued for trial since January 7, 71 and has now been in operation for more than three years according to various requirements and opinions. The National Standard Drafting Team conducted a pilot revision of the standard. Has now been issued as an official standard. The official standards include the following eight standards: GB12674 General provisions of mechanical drawing; GB128-74 mechanical drawing drawing method;