с течением времени

см. тж. со временем

Such experiments will become more precise and more numerous as time passes.

Since all machines wear, their defects worsen as time goes on (or by).

Such optical binaries (stars) can be distinguished from real couples only in the course of time.

In (or With) time some of these bacteria developed metabolic pathways that led to ...

As time elapses, the concentration profiles take on a different shape.

Over the years the electronic micrometer instruments have become more and more automatic.

The magnetic poles of the Earth tend to move slowly with the passage of time.

These substances have accumulated through time.

The pole of relative rotation can change its position through time.

These properties vary with time.

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