It will become to whitezinc sulphide after absorbing sulfide in air to be poor at primary stainability.
它能与大气中的硫化物合成白色硫化锌而抑制初期着色。
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No need to go white-faced wearing zinc oxide anymore, just to protect against short UVB rays and longer UVA rays, said Dr. Amy Derick, a board-certified dermatologist in Barrington, Ill.