Значения для термина "proven of" отсутствуют.
1 This was the first experiment of its kind, and hence it has proven of especial interest.
2 The latter is undoubtedly the more proven of the two and would probably be available at a lower price.
3 The use of animal, nerve and gland extracts has proven of surprising efficiency in the treatment of paralysis and locomotor ataxia.
4 Mound layers are used quite successfully for the propagation of filbert varieties but have not proven of value with other nut-tree species.
5 This indifference might be considered kindness, inasmuch as it relieved the boy from attempting work which would have proven of a perilous nature.
6 They remain a delightful mystery, these westerners, and will know that for all the endeavour on show yesterday, nothing has been proven of yet.
7 They developed and fostered a love of music and eventually led to his gaining the musical education which has proven of such value to him.
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