fluoride-free glass
... fluoride waste ==> 含氟废水 fluoride-free glass ==> 无氟玻璃 fluoridization method of tooth surface ==> 牙面涂氟法 ...
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无氟磷酸盐玻璃 Fluorine-free phosphate glass
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为此，但只是治标不治本，要根本上防治氟化物的污染，在于用无氟乳浊玻璃。
But it is a temporary solution and if we want to control the fluoride pollution, we must use opaque glass with fluorine-free.
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