【经】 按收入总额计算的营业比率

based upon reasoning be based upon based estimated revenues operating ratio upon stream of revenues matching costs with revenues state budgetary revenues land-based broad-based operating ratio based upon net sales cost of other operating revenues operating ratio disk-based operating system ratio of total expenses to total revenues object-based virtual operating system disk-based operating system (DOS) probable errors based upon different samples contract based upon the utmost good faith external operating ratio index of operating ratio