维数

After Using the off-line data sampling technology and simultaneous lock, parallel A/D convert technology, the time discrimination ratio was decreased to a duration of 0.83μS. The color adjustment panel and unfactual page exchange technology was used to show arc moving procedure in the software design.

采用硬件时序电路控制数据采集过程、同步锁存和并行模数转换等硬件技术大大地提高了测试过程的时间分辨率；软件设计中，采用调色板技术实现图象的灰度显示，采用虚拟页切换技术实现电弧运动过程的动画显示；采取软硬件结合的办法，可随意改变传感器阵列在二维平面的排列形状和疏密程度，这可以扩大电弧研究工作中测试系统的适用范围。

The euclidean norm of an n-vector x with real or complex components is defined as following.

凡具实数分量或复数分量的n-维向量x的欧氏范数被定义如下。

The study's findings indicate: the unconfined compressive strength of red sandstone is mainly lined with compaction rate, pore distribution and condition of being linked with grains and the above factors have a more notable impact on its unconfined compressive strength; grains' area ratio and Euler number decrease as a whole, pores' directionality gradually increases, stability of its internal structure reduces.

研究结果表明：红砂岩的单轴抗压强度主要与密实程度、微孔洞等缺陷的分布情况及颗粒之间的联结状态有关，随着红砂岩风化程度的增强，以上各因素对其单轴抗压强度的影响将更加显著；随荷载的增加，红砂岩的颗粒面积比例及欧拉数总体上趋于减小，孔隙分布分维趋于增大，内部结构的稳定性不断降低。

After acquiring the ultraviolet absorption spectrum and its first order derivative spectrum distributions of Avermectin B1 by using UV-2401 PC spectrophotometer and spectrum-measuring system,we found that coordinates of the peak A252.2 and the valley A256.8 are not disturbed by the different forms of preparations.

用UV-2401 PC紫外分光光度计及光谱工作站，以1 nm狭缝宽度，2 nm Δλ间隔，在190～400 nm波长范围内快速扫描采集阿维菌素B1紫外吸收光谱，拟合一阶导数光谱发现峰顶A252.2，和峰谷A256.8在波长坐标上的位置不受不同制剂干扰。

This paper discusses the interface for message passing, puts forward several available methods to pass multidimensional sparse array between nodes, which are compared with each other by practice.

该文主要探讨了MPI中的消息传递调用接口，提出了几种有效的在结点间传递多维稀疏数组的方法，并通过实践加以比较。

By taking the strategy of uniting geometry with algebra and using the method of minimal value, the distance problems between a line and a line in four dimensional space are investigated and the caculation formula are given.

用形数结合的观点和极小值法，研究了四维空间中两直线间的距离问题，并给出了相应的计算公式。

In the third chapter,the Lévy-Feller advection-dispersion equation describing anomalous diffusion,with asymmetric fractional derivative,is considered.

更多程不同的是，在三维情形中，分数阶导数的复杂性使得在构造差分格式时所添加的摄动项也非常复杂，由此所构造差分格式的理论分析也变得比较复杂。

This method was applied to preprocess the 2-D seismic data of Shengli oilfield, showing that the fractional order derivative profile can effectively describe the unconformity and reflect the lateral changes of actual interface.

对胜利油田某区块实际二维地震资料进行了试处理，结果表明分数阶导数剖面能很好地描述不整合面，反映实际界面的横向变化。

That there was some awareness of a change in musical techniques and outlook in the years around 1320 is suggested also by the earliest music to exemplify the notation described in Philippe de Vitry's treatise, the motets for the roman de Fauvel copied into manuscript F-Pn fr ,146 in 1316, some of them extensive works several times longer than the motets of the previous generation and displaying a range of notational values far greater than it was possible to notate with the previous Franconian and post-Franconian techniques.

人们已经意识到这些音乐技术的改变，并且在1320年前后出现的这个观点也通过早期音乐证明了维特利的论文中描述的记谱方法。1316年抄录进《福威尔传奇》的经文歌的乐谱，其中有些篇幅很大，数倍于先前的经文歌，并且显示出的音符种类的增多远多于先前记载的弗朗科式经文歌和后弗朗科式经文歌记谱方法。

Three dimensional rotation represented by quaternion has two advantages over that by matrix: first, the geometric meaning is definitude; second, computation is easy.

用四元数表达三维的旋转与使用矩阵相比具有两个优点：第一，几何意义明确；第二，计算简单。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。