The collaborating degree of China and world was lower than 4.49, average for medical research.
中国和世界交通医学研究的作者合作度偏低，均低于医学类平均4.49的水平。
Except in Jiutai, total K content is lower than the average level of the world.
全K含量除九台外，均低于世界的平均水平；
Except in Jiutai, total K content is lower than the average level of the world.
全K含量除九台外，均低于世界的平均水平；
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