usable floor area造句怎么写

The changeover efficiency of crystal silicon is tall, usable floor area is small, use in housetop to have an advantage very much.

Residential usable floor area is to show the residence is medium what use net area can supply entirely inside cent door door is integrated.

It is the key for the reduction of construction initial energy use to reduce the embodied energy intensity and quantity in per usable floor area of the main materials.