铋是一种重金属元素，这让很多人都不太愿意接受，因为它会进入毛孔(加强抛光技术)要不然它很容易从脸上脱落。
It's a very heavy element, which makes it difficult for many people to wear. It has to be forced into the pores (hence the buffing technique) otherwise it is capable of sliding off the wearer's face.
很容易使漆面发作氧化腐蚀，可用研磨抛光处理。
It is easy to make paint attack oxidation corrosion, grinding and polishing processing can be used.
他们通常是液态，不论是用手还是抛光机都很容易上。
They are always in liquid form and they spread easily by hand or with a polisher.
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