Sentence examples for The principal difficulty from inspiring English sources

The principal difficulty at present is that there are no official rules.

The principal difficulty has been the assembling of material on which to base such studies.

The principal difficulty with the matchlock mechanism was the need to keep a length of match constantly smoldering.

The principal difficulty in this process is that large land areas are required, and energy is needed for pumping the water.

The principal difficulty is that there is either no meaningful measure of the output of a public service defense, for example—or output is complicated and multidimensional as with education or health.

The principal difficulty is the large number of interactions between electrons that must be taken into account; this fact makes computational quantum chemists some of the most demanding users of computers and, increasingly, of supercomputers.

For both Mr. Piesiewicz and Mr. Tykwer, the principal difficulties of the film involved getting the audience to sympathize with Ms. Blanchett's character, even after her horrible crimes, and capturing the languorous eeriness sought by Mr. Piesiewicz and Kieslowski.

The principal difficulties are the following: (1) Diffusion to the electrodes and reaction there must be sufficiently rapid to make bulk back reactions unimportant.

One of the principal difficulties arises from the sign of (x^{ n-1)}<0) (which is simply eliminated if condition (1.3) holds; cf. [3]).

One of the principal difficulties one encounters lies in the fact that (44) does not hold when (3) is satisfied, cf. [8].

The principal difficulties in the design of such a structure lie in two principal points dealing with the mounting of the DETF on its support and with the mechanical resistance of the structure.