This paper introduces a new type of solar water-heater, which works with direct-circulate compounded form. It can raise heat efficiency.
介绍了一种全新的太阳能热水器，采用直流—循环复合工作方式，提高了效率。
This paper introduces a new type of solar water-heater, which works with direct-circulate compounded form. It can raise heat efficiency.
介绍了一种全新的太阳能热水器，采用直流—循环复合工作方式，提高了效率。
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