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点评
市面见到的所有805,845,211,813,71,833,80等这种碳化钍钨合金灯丝的单端全部都是甲类!!
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点评
精辟!!!
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点评
那些大师是为了赚取稿费滴!他自己都没有做过随便一个组合扔出去你们当做小白鼠就行了
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