語言标签是語言代碼的缩写表示，例如en表示英语，pt-BR表示巴西葡萄牙语。由互联网工程任务组（IETF）的“BCP（英语：Best Current Practice） 47”文档系列定义。现在标准化为RFC 5646（引用了相关的RFC 5645）与RFC 4647，IANA语言子标签登记。使用的各成分来自ISO

ISO 639

15924（書寫文字代碼） RFC 3066, Tags for the Identification of Languages, Best Current Practice, January 2001 ISO 639 and the Ethnologue Ethnologue - Code change

伊那鲁单抗

sclerosis, myositis, antiphospholipid syndrome, and Sjögren's syndrome. Best Practice & Research. Clinical Rheumatology. February 2020, 34 (1): 101485. PMID 32067925

腸繫膜缺血

ISBN 9781437729306. Sreenarasimhaiah, J. Chronic mesenteric ischemia.. Best practice & research. Clinical gastroenterology. April 2005, 19 (2): 283–95. PMID 15833694

克隆氏症

Relevance in the understanding of disease mechanisms and clinical practice. Best Practice & Research Clinical Gastroenterology. 2004, 18 (3): 481–96. PMID 15157822

Found in articles

IETF語言標籤