查询词典 dot matrix printer

Five ways on comparing covariance matrix are applied to the Shanghai 50 Indexes Stock Exchange, which are sample covariance matrix, scalar matrix, two-parameter covariance matrix, single index matrix, constant correlation matrix. We adopt principal components method and Markowitz portfolio method to measure stock market risk using VaR, getting the effect of measuring market risk. The result shows that sample covariance matrix and two-parameter covariance matrix could measure market risk more effectively.

本文以上证50指数数据为样本，采用样本协方差矩阵、数量矩阵、两参数模型矩阵、单指数模型矩阵、常量相关矩阵作为与股票相关的协方差矩阵，结合投资策略选择的主成分方法和Markowitz最优投资组合方法，计算VaR以度量市场风险，并比较了五种协方差矩阵度量市场风险的效果，结果表明，在主成分方法中，样本协方差矩阵和两参数矩阵方法能有效的度量市场风险。

On the basis of the definition of matrix traces , this paper discusses their characteristics at first and then according to the norm of the F of square matrix and Cauchy-Schwarz inequality gives how to prove the zero matrix, unsimilar matrix, number cloth matrix, column matrix idempotent matrix and non-equality matrix.

根据矩阵迹的定义，首先给出了矩阵迹的性质，然后依据方阵的F—范数定义Cauchy—Schwarz不等式，给出了零矩阵，不相似矩阵，数幂矩阵，列矩阵，幂等矩阵及矩阵不等式的证法。

Selection of dot matrix LCD module and design of interface;2. Naxi hieroglyph of dot matrix and vector and curve generativity;3. Pattern of Chinese traditional settlements is introduced,which has particular dot matrix features of traditional architecture.

介绍了中国传统聚落的模式，指出它具有传统建筑所独有的点阵特点，并列举了能够将充满个性的"点"通过彼此和谐联系的"阵"结合的实例，并以此来启发当代建筑的设计思路，使其在居住建筑中得到体现，值得当代建筑师们思考。

Computing inverse matrix, a unit entrainment in the matrix behind the matrix, and then in front of it is processed into a matrix, diagonal matrix, the latter matrix that is the inverse matrix.

详细说明：计算逆矩阵，在矩阵后面夹带一个单位矩阵，然后把前面那一个矩阵处理成对角线单位矩阵，后面的那个矩阵就是逆矩阵。

In an impact matrix printer, it may also be termed a "needle" or a "wire" and in an electrosensitive printer or thermal matrix printer, an "electrode".

在击打式点阵打印机中，它或许也可叫作"针"或"细棒"，而在电火花打印机或热点阵打印机中则叫作"电极"。

Dot-Matrix Printer Dot-matrix printers can produce a page of text in less than 10 seconds and are highly reliable.

点阵式打印机能在不到几秒的时间内打印一页文本并且非常可靠。

Dot Matrix Pilot is form filler software designed for filling out preprinted forms with a dot-matrix printer.

点阵试验是填表而设计的软件，填写预先印制的表格与点阵印表机。

The printer's color management system for the adoption of two ways, one is a professional color management software phase, and color management software entirely up to the party, the printer just do simple output; the other option would be to the printer itself integrates color management system, color management is accomplished by the printer.

打印机的色彩处置编制的引进有两栽办法，一栽是与副业的色彩处置软件相绑缚，色彩处置分座由软件方来达不败，打印机只是怠工单一的不不不不不不不不不不不输入；另一栽办法是打印机本身集不败了色彩处置编制，色彩处置是由打印机来达不败的。

Click the "Start / Settings / Printer", check the current printer icon on whether there is a small black hook, and then the printer is set to the default printer.

点击"开始/设置/打印机"，检查当前使用的打印机图标上是否有一黑色的小钩，然后将打印机设置为默认打印机。

Laser printer Figure 2-23 Laser printer A laser printer is a high-speed , high-quality nonimpact printer.

激光打印机是高速高质量非击打式打印机。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。