从开创性研究到全世界应用的最常用的换热器: most frequently used heat exchangers from pioneering research to worldwide applications
专利: patent 短语和例子申请专利 apply for a patent; 实施专利 work one's patent; 制造、使用或销售专利产品 make, use or sell a patented product; 专利保障 patent protection; 专利标记 patent marking; 专利产品 patented product; 专利登记 pat
