ASTM D5222 -石油起源高燃点电绝缘油的标准规范
日期:2012-02-08 09:46
int; Flammability; High fire-point electrical insulating oils; Insulating fluids--specifications; Mineral insulating oil--specifications; Power/distribution electrical systems; Switchgears; Transformers--specifications;
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08/29 10:53