内加热熔锌
inner heating zinc melting
耐熔锌腐蚀
corrosion resistance to molten zinc
corrosion resistance
熔锌电炉
electro furnace for zinc melting
electrical furnace for melting zinc
熔锌腐蚀
Molten zinc corrosion
corrosion in melting zinc
熔锌感应电炉
zinc melting induction furnace