The invention discloses a double-effect ground source heat pump system.
本发明公开了一种双效的地源热泵系统。
Increasing carbon dioxide in the atmosphere has a double effect on coral.
大气中不断上升的二氧化碳含量对珊瑚有双重作用。
The basic principle of double entry bookkeeping is that every transaction has a twofold effect.
复式记账法的基本原理是每笔交易都有借贷双方。
The double speed switch has the advantages of simple structure and good transmission effect.
这种结构的双速开关结构简单、传动效果好。
Compact double color, not simple fashion effect!
简洁的双色，不简单的时尚效果！
Being a double edged sword, advantageous agricultural belts have both positive and negative economic effect.
优势农产品产业带是一把“双刃剑”，既具有正面经济效应，又具有负面经济效应。
Being a double edged sword, advantageous agricultural belts have both positive and negative economic effect.
优势农产品产业带是一把“双刃剑”，既具有正面经济效应，又具有负面经济效应。
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