different level of protection
different level resistance
management at different level
Soils with different fertility
treating different different diseases with the same means
different control measure with different swamp
different diameter and different step rolling
Different vertical datum in different neighboring nations
Method of Different Point and Different Region
coupling mechanism between upper level and low level jet
fiscal system at county level and township level
interaction between upper level and lower level
municipal level and county level
a combination of different opinions
accelerometer different sensitive element