本发明公开了一种双效的地源热泵系统。
The invention discloses a double-effect ground source heat pump system.
独特的双抛物面设计反光罩，使灯具光效大幅提高；
The unique design of the double paraboloid reflector, so that the lamp light efficiency increase;
独特的双抛物面设计反光罩，使灯具光效大幅提高；
The unique design of the double paraboloid reflector, so that the lamp light efficiency increase;
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