Quartz o se minerale oxide ma fausaga faavaa, lea ei ai le tulaga lelei o le maaa maualuga, faatinoga kemisi mautu, insulation lelei vevela, ma isi E masani ona faaaoga i le fausiaina, masini, metallurgy, mea faaeletonika, mea fou, malosi fou ma isi alamanuia, ma o se mea taua ...
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