尽管存在安全担忧,加拿大土著团体仍寻求与中国达成协议 Canada’s indigenous communities are seeking deals with China that could give Beijing access to the country’s natural resources, despite warnings fro ...
美中科学家合作研制的太阳能系统为廉价海水淡化提供了... 美中科学家合作研制的太阳能系统为廉价海水淡化提供了一条途径诸平
Fig. 1MIT researchers have developed a solar-powered desalination system that is more e ...