这个词是什么意思？
A metallic element that has the atomic symbol Bi, and atomic number 83. Its principal isotope is Bismuth 209.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001729 · MeSH 2026。
Courtesy of the U.S. National Library of Medicine. Annual snapshot; later updates may not be reflected. NLM does not endorse this service.