Опыты, проведенные Ломоносовым, при

Опыты, проведенные Ломоносовым, привели к многочисленным открытиям; самым важным среди них является закон сохранения материи (the law of preservation of matter).

Results (English) 1:

Experiments conducted by Lomonosov, led to numerous discoveries; the most important among them is the law of conservation of matter (the law of preservation of matter).

Results (English) 2:

Experiments carried out by Lomonosov, led to many discoveries; most important among them is the law of conservation of matter (the law of preservation of matter).

Results (English) 3:

Experiments conducted by they, have led to numerous discoveries; the most important among them is the law of gravity (the law of preservation of matter).