| 单词 | acetal |
| 例句 | Delrin, an acetal homopolymer with higher tensile strength, is a preferred substitute for metal parts and used in products ranging from gear wheels to insulin pens. DuPont to sell majority stake in Delrin resins unit for about $1.6 bln 2023-08-21T04:00:00Z In 2013 the winning car had a coating of vaporized metal while Colossus used front and rear aerofoils of laser sintered nylon and acetal resin wheels accurate to one micron. 'F1 in Schools' a class act for budding boffins 2015-01-27T05:00:00Z |
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