osmium
osmium
[ˈɒzmɪəm]
noun
[ˈɒzmɪəm]
noun
- [mass noun]the chemical element of atomic number 76, a hard, dense, silvery-white metal of the transition series(Symbol: Os)
（化学元素）锇(符号：Os) - A transition element, osmium is thought to be the densest non-radioactive element. Its main use is in alloys with platinum and related metals, where it contributes hardness; an alloy with iridium is used in fountain-pen nibs. Osmium tetroxide is used for staining tissues in electron microscopy
- early 19th cent.: modern Latin, from Greek osmē 'smell' (from the pungent smell of its tetroxide)
热门查询
- loun n.笨人，无用的人
- lounder n.重击，重打 v.狠狠地打
- lounge n.休息厅,客厅,（机场等的）等候室 vi.闲逛,懒洋洋地躺 vt.懒洋洋地打发（时间）,虚度光阴
- lounger n.游手好闲的人,憩息用的家具,休闲服 vi.闲荡，闲逛，虚度
- loungewear n.（总称）家常便服
- loup n.女用丝质面罩，跳跃 v.跳跃
- loupe n.（珠宝匠、钟表匠等套在眼窝上的）小型放大镜
- lour v.皱眉头 n.阴沉
- louse n.虱子,寄生虫,卑鄙的家伙 vt.搞糟，办砸,捉虱子，除虱子
- lousewort n.马先蒿属
- lousily adv.不洁地，讨厌地
- lousiness n.不清洁，卑鄙,茸毛
考试词汇表
