%0 Journal Article
%T LETTERS<br>
%J 科学通报(英文版)
%D 1980
%I 
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=30AA2519E8574A9739BEEC26DF3DD5C7&yid=E56875464B1C0EC1&vid=C5154311167311FE&iid=59906B3B2830C2C5&sid=5DD55A2029F498FE&eid=5DD55A2029F498FE&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=1&reference_num=0