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gold silver metal minerals
studied studying to study to be studied
erosion corrosion pitting dezincification
使水循环流经金属板 使合适的冷液体循环流经金属板 将室温控制于15℃以下 将室温控制于15℃左右 将电泳装置置于通风良好的环境下
the thrust pads are while metal faced on both sides the thrust pads are while metal faced only on the forward side the thrust pads are while metal faced only on the after side intermediate shaft usually supported by a plummer block
The metal has been first early
The ebb speed at strength is stronger at the surface The ebb speed at strength is stronger at the subsurface The flood usually begins earlier at surface The flood speed at strength is stronger at the surface"
gold silver metal minerals
metal strong black strong metal black black strong metal strong black meta
an equal amount of silver an equal amount of gold all the water in the jar now the water that leaves the jar
caustic embrittlement of the boiler metal acidic corrosion of the boiler metal hard scale deposits on the boiler tubes etching of the heat exchange surfaces
installations basket strainers a cylindrical container a metal or wire basket
metal strong black strong metal black black strong metal strong black metal
main bearing shells main bearing steel bearing metal
flat surface mirror finish sloping surface inclined surface
substance；stain；surface defect stain；substance；surface defect substance；surface defect；stain surface defect；stain；substance
erosion corrosion cavity scouring
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