Any city crossed by a rectangular grid can identify days where the setting sun aligns with their streets.

Throughout this paper, we work over a fixed field k. Let H be a finite dimensional cocommutative Hopf algebra and A an H-module algebra. A#~ H is the associated crossed product.

设H是域k上的有限维余交换Hopf代数，A是H-模代数，AσH是相应的crossed积。

Crossed product and twisted H-module. At the same time, we give Lemmas 1.3. 1.5 and 1.6 being used in the following sections.

文中在给出了弱作用、crossed积、twisted H-模等基本概念的同时，又给出了在后续中需要使用的一些引理，即引理1.3、引理1.5、引理1.6。

The Center of Crossed Product and Galois Extension of Rings

交叉积的中心与环的Galois扩张

Lastly, we discuss the factor type of this crossed product when it is a factor.

最后讨论该交叉积为因子时究竟是几型因子。

On Semidirect Product of Discrete Groups and Crossed Product of von Neumann Algebras

关于离散群的半直积与von Neumann代数的交叉积

The Analysis on the Crossed Sensitivity of Strain v/ s Temperature of Piezoresistive Transducer

压阻式传感器的应变与温度交叉灵敏度分析

Research on Crossbar Optical Switching Network in Optical Matrix Switches

光开关矩阵中Crossbar光交换网络的研究

In this paper, 4 × 4 MEMS optical matrix switches are proposed, in which on-off micro-mirrors are arranged with crossbar switching network. Ball-lensed single-mode optical fiber collimators are used as input and output ports.

采用纵横交换网络和通断型微镜实现4×4微电机械系统光开关阵列，利用球透镜单模光纤准直器作为微电机械系统光开关阵列的输入、输出端口。

A system for an optical crossbar interconnection network utilizing variable grating mode crystal optical transducers capable of performing intensity-to-spatial-frequency conversion is designed. The proposed system performs real-time and reconfigurable optical crossbar interconnections.

利用可变光栅模液晶光学传感器设计了一种光学十字开关互联网络系统，该系统可实时地重新组合光学十字开关互联，液晶光学传感器执行强度-空间频率转换。

An optical implementation and its control of optoelectronic integrated crossbar interconnection network is reported in this paper.

本文报道了光电子集成Crossbar互连网络的光学实现及电控制方法。

The Implementation and Control of CMOS/ SEED Optoelectronic Integrated Crossbar Interconnection Network

CMOS/SEED光电子集成Crossbar互连网络的实现及控制

In the design, four MCS-51 single-chip microcomputers are connected by crossbar network topology and a PC 386/ 486 is the host computer, forming a distributed multicomputer system.

它将四片MCS－51系列单片机通过全互连的拓扑结构连接起来，以PC386／486为主机，构成一个主从分布式控制的多机系统。

· Design the configurable Crossbar network and local memory, which could buffer data and communication with each unit flexibly.

研究并设计了可配置的Crossbar和局部存储器，可以灵活的进行数据的缓存并对各部件进行互连。

The theoretical model of coaxial-waveguide CARM amplifier is also formed. Theoretical Analysis of the Crossbar Transition from Coaxial Line to Rectangular Waveguide

其次，构造了同轴波导回旋自谐振脉塞放大器的自恰理论模型。横闩式同轴波导过渡的理论分析

Crossbar automatic telephone system

纵横制自动电话交换机

Crossbar automatic exchange system

纵横制自动交换方式

Thus, a new approach to solv-ing the management problem for the crossbar switching system is devel-oped.

对解决纵横制电话交换机的管理问题开辟了一条新的途径。

4 × 4 Crossbar Micro-Electro-Mechanical System Optical Matrix Switches

4×4纵横交换微电机械系统光开关阵列

Bandwidth Analysis of Cluster-Based Crossbar System

基于群的交叉开关系统带宽分析

Number Converter for Crossbar System Subscriber's Switchboard

纵横制用户交换机号码变换器