1. The wear resistance of high wear-resistant MC oil-containing nylon sheet ranks first among plastics, and the greater the molecular weight, the higher the wear resistance and impact resistance of...
PP board, also known as polypropylene board, is a semi-crystalline material. PP board is a plastic board made of PP resin by adding various functional additives through extrusion, calendering, co...
Because the tooth profile of the gear rack is straight, the pressure angle at all points on the tooth profile is the same, equal to the inclination angle of the tooth profile. This angle is called ...
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