用sliding surface造句子，“sliding surface”造句

When not in use, it is necessary to do the maintenance work of the lathe, prevent scraps, sand or impurity into lathe guide sliding surface, put rail "chewed" or worse it of wear and tear.

The sliding surface of s type angular contact spherical plain bearing inner ring is a non -symmetrical spherical surface.

Based on the limit equilibrium theory and the hypothesis of planar sliding surface, a formula for calculating the Angle of shear failure was deduced considering cohesion and cut slope Angle.