Water source heat pump of mine waste heat recovery is a new type of highgradeenergy saving technology, which pump low-grade heat into high-grate thermal energy.
回收矿井余热的水源热泵技术是一种把低品位热能转化为高品位热能的一种新型节能环保技术。
2
After the White House, the four of us went to dinner. Before our food arrived, our highenergy first-grade mentee wore out, leaned on his coat, and fell asleep.
从白宫出来后我们四个去吃晚餐。
3
Hydraulic drive, low consumption of energy, less man-hour and high automation grade.