чрезмерно

Such deposits yield badly broadened spectra.

Materials that excessively load (забивают) grinding wheels ...

See that no portion of the casing has worn too thin.

The errors so obtained are apt to be unduly pessimistic.

This will cause the threads to wear unduly.

A prohibitively long exposure ...

Источник: Русско-английский научно-технический словарь на Gufo.me