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https://scholar.google.com/scholar_url?url=http://www.sciencedirect.com/science/article/pii/S095741741000905X&hl=zh-CN&sa=T&oi=gsb&ct=res&cd=0&ei=PSB6WL_aKMK7jAHry6ToBA&scisig=AAGBfm1WRwH4660mqK7RE0Mua2EDpuxLlA
您即将离开知乎,请注意您的帐号和财产安全。
https://scholar.google.com/scholar_url?url=http://www.sciencedirect.com/science/article/pii/S095741741000905X&hl=zh-CN&sa=T&oi=gsb&ct=res&cd=0&ei=PSB6WL_aKMK7jAHry6ToBA&scisig=AAGBfm1WRwH4660mqK7RE0Mua2EDpuxLlA