Abstact the so-called social networking sites is a network service websites, namely the SNS website.
摘要所谓社交网站，是指一种网络服务网站，即SNS网站。
Abstact the waste source of metal chrome production are expounded, the method and results are discussed according to the practice.
阐述了金属铬生产中“三废”的来源，结合实际论述了三废治理的办法和效果。
Abstact objective:To observe the clinical efficacy of acupunctur and chiropractic in treating cervical headache of cervical artery type.
摘要 ： 目的：观察针刺加颈椎矫正治疗颈源性头痛的临床疗效。
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