maintenance interval
维修周期
保养周期
修理周期
维修间隔
维修间隔期
磨损规律
3-factors optimum design
A Global Optimum Result
adaptive implementation of optimum processing
adaptive optimum combining
asphalt optimum content
circulating water pump real-time optimum
City noise optimum place
climatically optimum region
Combination with optimum density
conditional optimum Ф-linear unbiased prediction
controlling optimum period
decision-making and optimum selection
decoration optimum design
design proposal optimum