This electric motor is using three-phase power.

In this chemical reaction, the gaseous phase plays an important role.

This compound is stable in the solid phase.

In this experiment, we will measure the temperature at which the substance becomes a liquid phase.

As the lunar phase changes, the night sky scenery also changes.

This stratum shows a specific facies.

In Japanese grammar, the passive voice is used to create a passive form.

Please go in that direction.

This problem cannot be solved unless both sides cooperate.

Fang Xi is my best friend.