Agricultural Comprehensive water saving technology system should be adopted for the well-irrigated area and the basic balance remained for extraction and recharge during one hydrological circle.
井灌区应采取农业综合节水技术体系，保持在一个水文周期内地下水采补基本平衡。
The heat balance of proton exchange membrane fuel cell (PEMFC) was calculated; the heat transfer and comprehensive utilization (the combined heat and power technology of fuel cell) were elaborated.
对质子交换膜燃料电池(PEMFC)进行热量平衡计算，就热量的传递、综合利用，燃料电池热电联供技术，进行了阐述。
As a comprehensive University, our balance of science and technology against humanities meets the demand in this world.
在中大这所综合大学，科技与人文齐头并进，符合世界的需要。
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