Sentence examples for main difficulty lies from inspiring English sources
The main difficulty lies in finding a suitable internal model.
The main difficulty lies in the modification by temperature change of cable tensions, which are then undetermined.
The main difficulty lies in the high number of parameters having an important impact on the overall system performance.
The main difficulty lies in the fact that linear combinations of tensors cannot be computed or stored explicitly.
Its main difficulty lies in how to design aging features that remain discriminative in spite of large facial appearance variations.
Those are persons whose main difficulty lies in their absence of dee emotional response, their inability to profit from experience, & their disregard for social mores.
Since none of these peripherals are extremely expensive or computation heavy, the main difficulty lay in software tradeoffs.
One of the main difficulties lies in handling the nonlocal term (frac{lambda f t, u(t))}{(int_{0}^{t}f x, u(x)),dx)^{2}}), representing a heat source and that depends continuously on time; another one in the fact that electrical conductivity depends on both time and temperature.
The main difficulties lie in determining the initial value at the starting time and simulating improper integrals more efficiently.
The main difficulties lie in uncertainties of FE modeling and errors related to modal testing (Lin 1990).
The main difficulties lie in two folds: First, how to develop adaptive backstepping control scheme for nonlinear strict-feedback systems with time delays by relaxing the restrictions of the time-delayed functions with all state variables.
