摘要
Submission of a manuscript implies:that the work described has not been published before(except in the form of an abstract or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere;that its publication has been approved by all co-authors,if any,as well as—tacitly or explicitly—by the responsible authorities at the institution where the work was carried out.The author warrants that his/her contribution is original and that he/she has full power to make this grant.The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors.Transfer of copyright to Science China Press and Springer be-
Submission of a manuscript implies： that the work described has not been published before （except in the form of an abstract or as part of a published lecture, review, or thesis）; that it is not under consideration for publication elsewhere; that its publication has been approved by all co-authors, if any, as well as-tacitly or explicitly-by the responsible authorities at the institution where the work was carried out. The author warrants that his/her contribution is original and that he/she has full power to make this grant.
