Sentence examples for principal difficulty in from inspiring English sources

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.

The principal difficulty in creating a database with such a wide scope is compiling information.

The principal difficulty in studying DDEs lies in their special transcendental nature.

The principal difficulty in exploring this bounty is keeping up with the emergence of new producers and new vineyard regions.

In summary, the mtDNA and Y-chromosome polymorphisms of the toothbrush DNA are found in both population groups but at a lower frequency in North Africans, but the principal difficulty in interpreting these patterns arises from disparities in the size of the databases available.

There are two principal difficulties in the accurate representation of these effects in discrete models.

However, application of the traditional modeling paradigm, based on systems of specific equations, faces some principal difficulties in these systems.

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.

A very high or even infinite system dimensionality is one of the principal difficulties in the study of replicator equations.

The principal difficulties in using nonpharmaceutical interventions to reduce influenza transmission among humans include the peak infectivity early in illness and the short incubation period, which both result in a short serial interval between related cases.