But, there are some problems existed in its study.
但是,实证会计研究中也存在着不少问题。
Some problems existed in Chinese re industry are pointed out.
指出了我国稀土行业存在的问题。
Some problems existed in single type of fiber reinforced polymer (FRP) used for strengthening concrete are pointed out.
指出单一纤维复合材料(FRP)加固混凝土存在的若干问题。
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