Sentence examples for the principal difficulty from inspiring English sources

Even so, the principal difficulty lay in keeping this contest taut.

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.

Carbon black creates the principal difficulty in recycling newsprint because no practical way has been found to destroy the black ink.

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

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.