复''.'消'.''''.'色差'. ''的矫正色相差和球面像差的, 如镜头.Corrected for both chromatic and spherical aberration, as a lens.当这两种系统消球差、彗差及复消色差后会产生不同的色球差.There is a different spheroc...
The figure of the Ancient Mariner has been variously interpreted.对于《古舟子咏》中的人物,一直有着各种各样的理解.A smooth sea never made a skillful mariner.平静的大海决不能造就熟练的水手.A mariner must have his eye upon rocks and sands as well as upon the No...
酞酸二丁酯一般用来作为这类增塑剂.Dibutyl phthalate is commonly employed as such a plasticizer.填料包括改性剂, 填充剂, 增塑剂和低摩擦添加剂.Fillers include modifiers, extenders, plasticizer and low friction additives.性质优良的增塑剂能无限期地留在塑料内.A good quality plasti...