asperities

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・

UK

A1 初級

n. pl.名詞 (複數)粗糙

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儀表塊（範德華力）--60個符號 (Gauge Blocks (Van der Waals forces) - Sixty Symbols)

06:33

儀表塊（範德華力）--60個符號 (Gauge Blocks (Van der Waals forces) - Sixty Symbols)

(Phil) So that's a really good question. So you need those smooth because you want those--if you have asperities there, if you have sharp bits,