查询词典 al

In this paper,the Raman spectrum were used to study sapphire,dichroite,aquamarinl,topaz and kyanite,it is found that the characteristic Raman translocations of sapphire which are caused by Al-O vibration are 413cm-1,640cm-1 and 668cm-1,the characteristic Raman translocations of dichroite which are caused by Si-O vibration are 550cm-1,662cm-1,964cm-1and 1176cm-1,the characteris.

本文通过对蓝宝石、堇青石、蓝色托帕石、海蓝宝石和蓝晶石的拉曼光谱进行测试与研究，得到蓝宝石具有由Al-O振动引起的特征拉曼位移413cm-1，640cm-1和668cm-1；堇青石具有由Si-O振动引起的特征拉曼位移550cm-1，662cm-1，964cm-1和1176cm-1；海蓝宝石具有由Si-O振动引起的特征拉曼位移678cm-1，1064cm-1，1232cm-1；蓝色托帕石具有由Si-O振动引起的特征拉曼位移844cm-1和924cm-1；蓝晶石具有由Si-O引起的特征拉曼位移933cm-1和1133cm-1。

Assuming that the intermediate system decayes with a statistical lifetime, the general behaviour of the threefold differential cross section d~3σ/dZdEdθ in the dissipative collisions of 68MeV ~(12)C+~(27)Al and 68.6MeV ~(12)C+~(40)Ca system are analysed in the diffusion model framework.

在扩散模型的框架内，用假定中间组合系统以一个统计的寿命衰变的方法分析了68MeV~(12)C+~(27)Al和68.6MeV~(12)C+~(40)Ca的耗散碰撞中产生的产物的三重微分截面d~3σ/dZdEdθ的一般趋向。

Tseng et al(2003) proposed a variable discount factor to tackle the problem and its results are potentially useful to practical manufactures.

Tseng et al(2003)提出了引入变动折扣因子的想法，其结论对于实际生产具有十分重要的意义。

The strength, impact toughness and wear resistance of the composites were also examined. Results show that the problems of the dispersiveness of Al 2O 3 particulate in aluminium liquid can be solved effectively by alternative processing parameters. The composites ...

结果表明，通过选择合适的工艺参数，可以很好地解决Al2 O3 颗粒在Al合金液中的分散性问题，所得复合材料具有一定韧性和良好的耐磨性能。

DISPERSOID AND SiC PARTICULATE STRENGTHENED Al COMPOSITES Ⅱ.

弥散质点和SiC颗粒复合强化Al基复合材料Ⅱ。

After this the dissolvent velocity of Al/TiC prefabricating alloy in zinc melt has been measured by means of self-made experimental equipment.

利用自制的试验装置测试了Al/TiC预制合金在锌熔体中的溶解量。

Gastaldi and co-workers have observed two types of contrasts in Al-Pd-Mn IQCs: black-white double-lobe and loop-shaped, by using X-ray topography, and the facetted dodecahedral pores by phase-sensitive radiography.

Gastaldi领导的小组在结合利用X射线形貌术以及相位敏感成像术研究Al-Pd-Mn二十面体准晶单晶中的缺陷时发现两种衬度，其中已知黑白双瓣衬度是由于准晶中的五角十二面体空洞引起，而对于环形衬度则除了知道退火行为不同于位错从而不太可能是位错圈外，基本上对其缺陷的几何及性质不甚了解。

Single detector and coincidence Doppler broadening measurements using slow positron beam were carried out to study Ti/Al multilayer films. The main goal is to study the evolution of vacancy-type defects and inter-diffusion of elements in films subjected to different annealing conditions.

4符合多普勒展宽测量结合慢正电子束流研究了磁控溅射方法制备的Ti/Al多层膜，分析讨论了多层膜缺陷结构的热稳定性，实验结果表明，随退火温度的升高，点缺陷结构经历了迁移、聚集长大最后崩塌回复过程。

Near Nimrud, Iraq, May 1999: This double exposure shows a Muslim family resting at the end of the day and Karakosh al-Taheram, a Catholic church.

1999年5月伊拉克尼姆鲁德附近：这张双重曝光的照片展示了一个穆斯林家庭在一天结束时休息的场景以及一座天主教堂Karakosh al-Taheram的景象。

The growing characteristic of cavities in Al-Li alloy during the superplastic plane strain and double axis tensile strain is investigated and compared.

本文研究和比较了Al－Li合金超塑平面应变和双轴拉伸应变中空洞生长的特点及空洞受到抑制的程度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。