排序方式: 共有67条查询结果,搜索用时 0 毫秒
1.
2.
半个多世纪以前,弗兰克·麦景图和朋友在纽约附近的一个小镇创造了Mclntosh(麦景图)这个品牌.估计当时没有人预料到.时至今日.Mclntosh(麦景图)已然成为大名鼎鼎的Hi—End老牌,在全球范围内拥有了一大帮粉丝。如果你是发烧友.你可以不喜欢Mclntosh(麦景图)宽松温暖的声音风格.你甚至可以对它高昂的售价不以为然.但你一定深深地熟悉它湖水蓝的面板, 相似文献
3.
4.
弗兰克-赫兹实验中定态能级间隔具有很强的周期性.本文借鉴频谱分析的方法,对弗兰克-赫兹实验数据进行处理,结果显示该方法准确确定出了定态能级间隔,结果有着很强的直观性及良好的处理效果. 相似文献
5.
6.
Dislocation Dissociation Strongly Influences on Frank-Read Source Nucleation and Microplasticy of Materials with Low Stacking Fault Energy 下载免费PDF全文
The influence of dislocation dissociation on the evolution of Frank-Read (F-R) sources is studied using a three- dimensional discrete dislocation dynamics simulation (3D-DDD). The classical Orowan nucleation stress and recently proposed Benzerga nucleation time models for F-R sources are improved. This work shows that it is necessary to introduce the dislocation dissociation scheme into 3D-DDD simulation, especially for simulations on micro-plasticity of small sized materials with low stacking fault energy. 相似文献
7.
Driven dynamics of a two-dimensional Frenkel-Kontorova model is studied in the paper. In our numerical simulations, it is found that the movement direction of the center of mass is not consistent with that of the external driving force except for some special symmetric directions at the lower driving force. Our results also indicate that the movement direction of the center of mass strongly depends on both the magnitude and the direction of the external driving force as well as the misfit angle between two layers. 相似文献
8.
采用薄层层析和氨基酸分析仪检测了细枝木麻黄弗兰克氏菌菌株Cc01的细胞化学组分.表明它的全细胞特征性糖为木糖和半乳糖;细胞壁氨基酸组分在薄层上只显示有赖氨酸.而无meso-DAP和甘氨酸;但在氨基酸分析仪上除含有谷氨酸(GLU)、甘氨酸(GLY)、丙氨酸(ALA)和二氨基庚二酸(DAP)以外,尚有较高含量的天冬氨酸(ASP)和赖氨酸(LYS).由这些氨基酸的分子比得出,菌株Cc01与胞壁Ⅱ型和Ⅲ型的参考菌株均明显不同,其特征性氨基酸分子比为Glu∶Gly∶Ala∶Dap∶Asp∶Lys为1.00∶0.13∶3.50∶0.21∶0.53∶0.78,其DAP含量仅为Ⅲ型菌株的1/6.表明Cc01的胞壁类型和其它弗兰克氏菌不一样,是一种特殊类型. 相似文献
9.
弗兰克-赫兹实验中吸收峰形成与变化判断准则的研究 总被引:3,自引:0,他引:3
以汞原子第一激发电势为例,系统地研究了吸收峰的形成条件,进而导出了吸收峰形成与变化的判断准则,并利用这一准则成功地解释了吸收曲线常成橄榄形的原因。 相似文献
10.