[材]?石英粉
... quartz flexible servo accelerometer 石英挠性伺服加速度计 quartz flour 石英粉 quartz funnel 石英漏斗 ...
晶体石英粉
Mahmoud Nili of Bu-Ali Sina University in Hamadan for example, is using polypropylene fibres and quartz flour, known as fume, in his mix.
ECONOMIST: Bunker-busting
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