搜索 - 科创

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SPARK GAP產生的聲音真的造成我很大困擾，現在剛好是農曆春節，附近燃放鞭炮、煙火(內地似乎稱為禮花彈?)非常多，掩蓋我產生的聲音，不然我家樓下的住戶早就抗議了。我家樓下的住戶，連椅子在地上挪動的...

引用第9楼carneades于2010-03-08 00:37发表的 :氯化银和碳酸钠混合后高温灼烧，得到银、氯化钠、氧气。然后过滤出不溶物，溶解在硝酸里面即可。高温是要达到多少度？直接分解氯化银貌...

看了LS那么多的帖子，再来发一贴叫Kc航空航天局更好（论坛里绝大多数还是大气层内飞行的，跟航空还是有点关系的）Kechuang Aeronautics and Space Administration...

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