qrfCOCA³¹⁵¹¹¹⁺⁴BNC¹²⁶⁴¹⁶⁺⁴ 基本例句 =Quaranfil virus 卡兰非尔病毒 QRF is a kind of new armament oil with the functions which can conduct cleaning, lubrication and anti- corrosion, and it performs well at low temperature. QRF武器三用油是一种新型的多功能油品,具有清洗、润滑、防护功能,低温性能优良等特点。 cnki