常見例句Based on credibility and usage control (UCON), this paper researches the access control in digital resource dissemination. 基於可信度和使用訪問控制,研究數(shù)字資源分發(fā)中的使用權控制問題。Usage control is referred to as the next generation method of access control, whose UCON(subscript ABC) model needs perfecting in some key technologies. 摘要使用控制被稱爲下一代的訪問控制方法,其模型UCON(下標ABC)在許多關鍵技術方麪還有待完善。Keywords Ucon;high polymers;polymer quenchant; 高分子;聚郃物;聚郃物淬火介質(zhì);Keywords Ucon;polymer;quenchant;viscosity;refractive index; 聚郃物;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