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2018-12-01 18:42:33      µã»÷£º
ÏîÄ¿ ²âÊÔÊý¾Ý
SiO2 ¡Ý98.6%
Ä¥ËðÂÊ 0.03%
ÆÆËéÂÊ 0.05%
¿Õ϶ÂÊ 43%
ĪÊÏÓ²¶È 7.50%
ÑÎËá¿ÉÈÜÂÊ 0.02%
ÃÜ¶È 2.66g/cm3
ÈÝÁ¿ 1.80g/cm3
ÄÍËá¶È >98%
²»¾ùÔÈϵÊý ¡Ü1.60k80
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