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- 汽车后视镜球头耐磨机试验机程序。原理是通过控制上下左右4个气缸往复运动，模拟人手扳动后视镜做耐久试验-Car rearview mirror ball wear-resistant machine testing machine procedures. Principle is that by controlling the up and down about four-cylinder reciprocating motion, simulation staff pulled the rear