操作难度指标
operative difficulty index
成形难度评价系统
evaluation of difficult system of forming
分离难度系数
degree of difficulty of separation
高龄高危高难度
high-risk and elderly patient
高浓度、难降解有机污水
organic wastewater of high consistence and difficu
高浓度难降解
high-strength arid non-degradability
恢复难度等级
difficulty grade of recovery
恢复难度系数
difficulty coefficient of recovery
技术难度
technology difficulty
difficulties in terms of technology