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铱iridium 【医】 Ir iridium 铱(1)銥yī(2)银白色硬脆很重的铂族金属元素, 主要价态是三价和四价, 通常以与铂或锇的天然合金存在于铱锇矿中, 在常温下耐多种化学侵蚀, 专用于硬化铂合金, 适用于外科仪器, 电气和其他科学仪器, 宝石和金笔尖 [iridium] ――元素符号 Ir
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fifth column
fifth degree of kinship
fifth disease
fifth estate
fifth finger
fifth force
fifth generation computer
fifth-generation computer
fifth-generation language
fifth-generation project
fifthly
fifth nerve
fifth venereal disease
fifth ventricle
fifth wheel
fifth wheel of a coach
fiftieth
fiftieth-normal solution
fifty
fifty-fifty
fig
fig.
Figari's hemoantitoxin
figeater
fight
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