usualadj.通常的；惯常的；惯例的usual service conditions正常工作条件usual rate of net profit通常纯利润率usual place of residence经常的居住地, 常驻地usual childhood illnesses常见儿科疾病usual provider continuity经常连续的供应者usual medical consumables常规医用耗材usual statistical criteria常用统计标准usual diseases of childhood儿科常见病, 儿童期常见病usual interstitial fibrosis普型间质性纤维化usual hydfo-geological area水文地质异常区