图纸内容还应包括材料部件编号，间隙公差，表面机械加工符号，热处理信息，表面保护，材料重量，以及其他的必要内容。
Drawings will also include the material part Numbers, tolerances clearances, surface machining symbols, heat treatment information, surface protection, material weight and other necessary information.
锥度：任何轴承部件的表面角度不正确或者不符合图纸要求。
TAPER: any surface of any bearing part that is not the correct Angle or not to print.
阅读设计图纸和工程说明书，获取有关产品用料，表面处理及尺寸等方面信息并核对图纸中尺寸数值。
Reads blueprints or engineering specifications to obtain product information such as specified material, surface finish, and dimensions.
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