Red Star Over China by Edgar Snow is a book that offers junior students a unique glimpse into a significant period in China’s history.The book is a compilation of Snow’s interviews with Mao Zedong and other leaders ...Red Star Over China by Edgar Snow is a book that offers junior students a unique glimpse into a significant period in China’s history.The book is a compilation of Snow’s interviews with Mao Zedong and other leaders of the Communist Party of China(CPC)in the 1930s,providing first-hand accounts of the events that led to the establishment of the People’s Republic of China.展开更多
The Wind in the Willows by Kenneth Grahame is a delightful tale that has caught the hearts of children and adults alike for over a century.For junior students,this book offers a magical journey into the lives of four ...The Wind in the Willows by Kenneth Grahame is a delightful tale that has caught the hearts of children and adults alike for over a century.For junior students,this book offers a magical journey into the lives of four anthropomorphic(拟人化的)animals—Mole,Rat,Toad,and Badger(鼹鼠、老鼠、蟾蜍和獾)—living in the idyllic(田园诗般的)English countryside.展开更多
Rachel Carson,a famous American marine biologist and conservationist,wrote the environmental science book Silent Spring in 1962.The book has raised public awareness of the bad effects of indiscriminate pesticide(杀虫...Rachel Carson,a famous American marine biologist and conservationist,wrote the environmental science book Silent Spring in 1962.The book has raised public awareness of the bad effects of indiscriminate pesticide(杀虫剂)use and the need for better environmental protection.展开更多
针对筋骨疼痛酒中药处方的渗漉过程,研究药粉颗粒床层特性对于渗漉压降的影响。利用不同级别的筛网对于500 g 24目和100目药粉颗粒分别进行筛分,测定颗粒平均粒径、形状系数与比表面积。在五种不同堆高下测量颗粒床层孔隙率。选择乙醇...针对筋骨疼痛酒中药处方的渗漉过程,研究药粉颗粒床层特性对于渗漉压降的影响。利用不同级别的筛网对于500 g 24目和100目药粉颗粒分别进行筛分,测定颗粒平均粒径、形状系数与比表面积。在五种不同堆高下测量颗粒床层孔隙率。选择乙醇溶液作为溶剂实施渗漉,并基于Carman-Kozeny公式计算渗漉压降。结果表明,药粉越细、堆高越小,颗粒床层孔隙率越大;在相同堆高下,细粉颗粒床层的孔隙率与比表面积均高于粗粉颗粒床层,导致渗漉压降较高。展开更多
文摘Red Star Over China by Edgar Snow is a book that offers junior students a unique glimpse into a significant period in China’s history.The book is a compilation of Snow’s interviews with Mao Zedong and other leaders of the Communist Party of China(CPC)in the 1930s,providing first-hand accounts of the events that led to the establishment of the People’s Republic of China.
文摘The Wind in the Willows by Kenneth Grahame is a delightful tale that has caught the hearts of children and adults alike for over a century.For junior students,this book offers a magical journey into the lives of four anthropomorphic(拟人化的)animals—Mole,Rat,Toad,and Badger(鼹鼠、老鼠、蟾蜍和獾)—living in the idyllic(田园诗般的)English countryside.
文摘Rachel Carson,a famous American marine biologist and conservationist,wrote the environmental science book Silent Spring in 1962.The book has raised public awareness of the bad effects of indiscriminate pesticide(杀虫剂)use and the need for better environmental protection.
文摘针对筋骨疼痛酒中药处方的渗漉过程,研究药粉颗粒床层特性对于渗漉压降的影响。利用不同级别的筛网对于500 g 24目和100目药粉颗粒分别进行筛分,测定颗粒平均粒径、形状系数与比表面积。在五种不同堆高下测量颗粒床层孔隙率。选择乙醇溶液作为溶剂实施渗漉,并基于Carman-Kozeny公式计算渗漉压降。结果表明,药粉越细、堆高越小,颗粒床层孔隙率越大;在相同堆高下,细粉颗粒床层的孔隙率与比表面积均高于粗粉颗粒床层,导致渗漉压降较高。
