The vinyl-flame retardant resin and thermal-resistant UPR were mixed in styrene;a new class H flame retardant solventless impregnating varnish was prepared.是什么意思_The vinyl-flame retardant resin and thermal-resistant UPR were mixed in styrene;a new class H flame retardant solventless impregnating varnish was prepared.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句