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1·Panda are animals, than live in Chian.

熊猫和动物都是负数，…

2·The experimental results showed that the molecular weight of the copolymer was influenced by the quantity of initiator and chian regulator.

用IR 表征了共聚物的结构，研究了引发剂和链调节剂用量对共聚物相对分子质量的影响。

3·The aeolian desertification is a land degradation characterized by wind erosion mainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regions in Northern Chian.

沙漠化是干旱、半干旱及部分半湿润地区由于人地关系不相协调所造成的以风沙活动为主要标志的土地退化。