polyacetal
A day on which a festival, religious event, or national celebration is traditionally observed. / A day declared free from work by the state or government.
(chemistry) a polyether derived from an aldehyde or ketone and containing -O-R-O- groups in the main chain; especially polyoxymethylene derived from formaldehyde
Impregnated with menthol.
(pathology) Synonym of tuberous sclerosis
研究チームは、アルデヒドまたはケトン由来で主鎖に -O-R-O- 結合を持つポリエーテル（ポリアセタール）を精密ベアリングに成形し、機械装置における耐摩耗性を評価した。
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DiQt
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