【化】 金属表面处理剂(指磷化底漆或洗涤底漆)

base metal

frame made of pressed metal

earth engenders metal

TAPPING metal or other material [= screw-threading]

road metal paving (crushed-stone pavement)

fused masses (fused mass, molten metal)

pig-iron mixer (hot-metal mixer)

metal foil overlay