Ambient air, exhaust air, soil and rock are the most common heat source types.
Ambient air, exhaust air, soil and rock are the most common heat source types.
室外空气、回风、土石是目前常见的热源形式。
Ambient air, exhaust air, soil and rock are the most common heat source types.
室外空气、回风、土石是目前常见的热源形式。