low-melting heavy metal

heavy... ... low sulfur heavy oil 低硫粗柴油 low-melting heavy metal 低熔点重金属 low-speed heavy cut 低速重切削 ...

低熔点重金属,low-melting heavy... ... ) low melting point metal 低熔点金属 ) low-melting heavy metal 低熔点重金属冶> ...