1) Sn group
Sn群
2) Symmetric group's n
对称群Sn
3) tin
[英][tɪn] [美][tɪn]
Sn
1.
Measurements of release sound velocities of tin with reverse-impact method;
反向碰撞法测量Sn的高压卸载声速
2.
The oxidation behviours of liquid tin with and without trace Ge at 250℃in atmo- sphere were studied by both observation and removing dross from the surface periodically.
采用观察液态Sn表面氧化行为和刮取表面氧化渣的方法,研究了微量元素Ge对液态Sn在大气和250℃条件下表面抗氧化性能的影响,并与纯Sn的氧化行为进行对比;利用X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)研究了合金表面元素的含量、价态,及合金氧化后的表面形貌。
3.
Based on Atomic and Molecular Reaction Statics and Group theory, the basis sets SDD~(**) for Tin and 6-311g~(**) for H_2, and density functional (B3P86) method have been used to calculate energy E, heat capacity C_v, entropy S of hydrogen isotopes and their Tin compounds.
根据原子分子反应静力学与群论,确定了H2、D2和T2的基电子状态为1∑+g(D∞v),SnH、SnD和SnT的基电子状态为2∑+(C∞v)。
4) Sn(II) / Sn(IV)
Sn(Ⅱ)/Sn(Ⅳ)
5) Sn whisker
Sn须
1.
Relations between the chemical composition of Sn finish and Sn whisker growth under temperature cycling;
温度循环条件下电镀液配方对镀层Sn须生长的影响
2.
Sn whisker growth in TC conditions had in a high rate,a high density and a uniform length.
采用TO220封装的电子元件,研究了在温度循环条件下,元件Cu引脚上纯Sn镀层的Sn须生长行为。
补充资料：陪群公登箕山赋得群字
【诗文】：
许由去已远，冥莫见幽坟。世薄人不贵，兹山唯白云。
宁知三千岁，复有尧为君。时佐激颓俗，登箕挹清芬。
高节虽旦暮，邈与洪崖群。
【注释】：
【出处】：
全唐诗：卷882-9
许由去已远，冥莫见幽坟。世薄人不贵，兹山唯白云。
宁知三千岁，复有尧为君。时佐激颓俗，登箕挹清芬。
高节虽旦暮，邈与洪崖群。
【注释】：
【出处】：
全唐诗：卷882-9
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条