zinc-coated screw 镀锌螺钉
tin-coated roofing screw 镀锡瓦楞螺丝
coated roofing screw 镀锡瓦楞螺丝
tin-coated d roofing screw 镀锡瓦楞螺丝
For example, as for coated screw, the coating and the core metal are two homogeneous materials.
例如带有镀层的螺钉，镀层和内部金属为两种均质材料。
For extra durability it features carbide diff balls and a titanium nitride-coated diff screw.
为额外的耐用性，它的特点碳化物差异球和氮化钛涂层差异螺钉。
If possible, screw in the junction box and head of the Department points Vaseline coated to prevent rust.
如果可能的话，在接线盒的螺丝和线头处涂上点凡士林，以防再生锈。
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