This capacitor is an important part of the electronic circuit.

What is the capacity of this capacitor?

It's difficult to solve a part of this problem.

Health is very important.

His opinion is very important.

This circuit is very complex.

An electron is a part of an atom.

It is important to understand the importance of health.

In French, the partitive article plays a very important role.

The greater part of the time is spent on work.