1) Sn velocity
![点击朗读](/dictall/images/read.gif)
Sn速度
1.
The Sn velocity image in the uppermost mantle beneath the China continent is constructed by the tomography method using 43646 travel times from Annual Bulletin of Chinese Earthquakes.
主要结果是 :①全国平均Sn速度为 4 。
2) signal noise ratio gradients
![点击朗读](/dictall/images/read.gif)
SN比梯度
3) sn-metrizable space
![点击朗读](/dictall/images/read.gif)
sn-度量空间
4) tin
[英][tɪn] [美][tɪn]
![点击朗读](/dictall/images/read.gif)
Sn
1.
Measurements of release sound velocities of tin with reverse-impact method;
![点击朗读](/dictall/images/read.gif)
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)。
5) sn-metrizable spaces
![点击朗读](/dictall/images/read.gif)
sn可度量空间
1.
Notes on sn-metrizable spaces;
![点击朗读](/dictall/images/read.gif)
关于sn可度量空间的注记
6) Sn(II) / Sn(IV)
![点击朗读](/dictall/images/read.gif)
Sn(Ⅱ)/Sn(Ⅳ)
补充资料:(-)-2,3-O-Isopropylidene-sn-glycerol
分子式:C6H12O3
分子量:132.16
CAS号:14347-78-5
性质:密度1.062。沸点72-73°C (8 mmHg)。折射率1.433-1.435。闪点80°C。比旋光度-13.7° (neat)。水溶性miscible。
分子量:132.16
CAS号:14347-78-5
性质:密度1.062。沸点72-73°C (8 mmHg)。折射率1.433-1.435。闪点80°C。比旋光度-13.7° (neat)。水溶性miscible。
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