• Massive stars (or Stars with a large mass) ...

см. тж. значительный

• Amply-dimensional flywheels ...

• This small grader is built to handle those jobs for which a full-size grader would be an extravagance.

• A major installation such as our laboratory ...

• Profound (or Gross) changes occur in the physical and chemical properties of the substance.

• The cells draw current from the battery at a very significant (or substantial) rate.

• A sizable arc forms between the contacts.

• The solar system may remain in existence without major changes for ... additional years.

• Metal is not believed to make much (of a) contribution to the interior material of the mantle.

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.