七大类常规武器 conventional arms in the seven categories
第七大类 GBM
七烯大环内酯类抗生素 heptaene macrolide antibiotics
德格雷认为衰老是一个累积伤害的过程，他将累积伤害分为七大类，并且希望有朝一日能利用再生医学去克服每一种伤害。
He views aging as a process of accumulating damage, which he has divided into seven categories, each of which he hopes to one day address using regenerative medicine.
本论文通过建立中国农村居民消费行为的AIDS模型，比较研究了“九五”和“十五”两个时期中国农村居民七大类商品消费的动态特征。
Based on the AIDS model, the paper compares the dynamic characters of Chinese rural residents consumption of seven major commodities during the Ninth and the Tenth Five-year Plan.
本论文通过建立中国农村居民消费行为的AIDS模型，比较研究了“九五”和“十五”两个时期中国农村居民七大类商品消费的动态特征。
This paper researched the consumption structure of the rural residents by building the AIDS model of the rural residents in Fujian province.
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