常見(jiàn)例句Based on credibility and usage control (UCON), this paper researches the access control in digital resource dissemination. 基于可信度和使用訪問(wèn)控制,研究數(shù)字資源分發(fā)中的使用權(quán)控制問(wèn)題。Usage control is referred to as the next generation method of access control, whose UCON(subscript ABC) model needs perfecting in some key technologies. 摘要使用控制被稱(chēng)為下一代的訪問(wèn)控制方法,其模型UCON(下標(biāo)ABC)在許多關(guān)鍵技術(shù)方面還有待完善。Keywords Ucon;high polymers;polymer quenchant; 高分子;聚合物;聚合物淬火介質(zhì);Keywords Ucon;polymer;quenchant;viscosity;refractive index; 聚合物;淬火介質(zhì);粘度;折光指數(shù);Keywords UCON E;polymer quenchant;big die block workpieces; 水基淬火劑;大模塊工件;ucon oils 烏康油 返回 Ucon