oxymethylene

常见例句

• Keywords poly（oxymethylene）;irradiation;CaCO 3;
  聚甲醛;辐照;纳米碳酸钙;
• oxymethylene copolymer fibre
  甲醛共聚物纤维
• oxymethylene diphosphoric acid
  氧亚甲焦磷酸
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