Weathering steels should be used with caution as their resistance to corrosion is often significantly reduced by mechanical wear att he surface.

耐候性钢材应谨慎使用，因为表面机械磨损经常会大幅度降低其抗腐蚀能力。

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Then the effect of weathering on mechanical strength of the granites is discussed.

在此基础上，讨论了风化因素对花岗岩力学强度的影响。

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Because of the side slope rock mass affected by unloading and weathering, and cutting of joints and cracks, the whole mechanical properties is poor.

边坡岩体受卸荷、风化作用影响及节理裂隙的切割，整体力学性质较差。

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