Funding for this research was provided by:
National Natural Science Foundation of China (61371100, 61401118, 61571157)
National Marine Technology Program for Public Welfare (201505002)
Subject Guide Fund of Harbin Institute of Technology at Weihai (WH20150111)
Text and Data Mining valid from 2018-03-05
Received: 27 November 2017
Accepted: 14 February 2018
First Online: 5 March 2018
: Not applicable.
: The authors declare that they have no competing interests.
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