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Because of the high loads the bearing material is a tin-aluminum(锡-铝) alloy bonded to a steel shell. The crosshead pin is highly polished to a______.
A.flat surface
B.mirror finish
C.sloping(倾斜的) surface
D.inclined(倾向的) surface
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更多 “ Because of the high loads the bearing material is a tin-aluminum(锡-铝) alloy bonded to a steel shell. The crosshead pin is highly polished to a______.A.flat surfaceB.mirror finishC.sloping(倾斜的) surfaceD.inclined(倾向的) surface ” 相关考题
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