Analysis of the Phenomenon
applicability of the model
correction of the model biases
describe the phenomenon
Design about how to establish the model
determine the value ofm compare the aetual measured results coith the
difference in elevation between the observation sites and the model surface
dispel the phenomenon of pulling billet
dissemination of the value of a quantity
Dissemination of the value of quantity
Existence and uniqueness of the model
Experiencing the Value of Regress Education
guards against hits the model
modification to the model
Optimization apply fertilizer the model
shedding of the the physical body
the historical opportunity