In this lesson, I will introduce your first three commands: PWD (print working directory), CD (change directory), and ls (list files and directories).
在这一节，我会首先向你介绍三个命令：pwd(打印当前工作目录)，cd(改变目录)，还有ls(显示出文件和目录)。
Listing 1 shows the use of the PWD command, and three different ways to use the ls command to list the files in this directory.
清单1展示了pwd命令的使用，以及通过三种不同的方法使用ls命令列出此目录中的文件。
This paper firstly discusses three types of parallelism in LS SIMD array microprocessor, they are the concurrence of data, the pipelining and the operation in parallel.
首先介绍了L SSIMD阵列微处理器的三种并行性：数据并行、流水线并行和指令的并行执行。
Original conditions: Use D flip-flop (74 LS 74), " and" gate (74 LS 08), " or" gate (74 LS 32), non-gate (74 LS 04), three binary mod 5 counter design.
原始条件：使用D触发器（ 74LS 74 ）、“与”门 （ 74 LS08 ）、“或”门（ 74 LS32 ）、非门 （ 74 LS04 ），设计三位二进制模5计数器。
Algorithms currently used for high speed data transmission over voice-band channels can be based on following three principles: on LMS criterion, on ls criterion or on artificial neural network.
高速数据传输中信道均衡算法大致分为三类：即基于LMS准则、LS准则和人工神经网络的自适应算法。
The cross wedge rolling deformation process of shaft parts with eccentric section was simulated with three-dimension finite element soft LS-DYNA by using elastic-plastic finite element method.
利用三维弹塑性有限元软件L S- DY NA对一种典型偏心轴类零件楔横轧成形进行了数值模拟，分析了其成形过程、应力应变场分布及工艺特点。
To analyze the wires breaking-induced vibrations of long-span power transmission towers, three finite element models of shield wire, conductor wire and tower were established with ANSYS/LS-DYNA.
基于有限元程序ANSYS/LS-DYNA，分别建立以等效弹簧代替塔对线路作用的导线、地线模型和以等效弹簧代替线路对输电塔作用的直线塔模型。
To analyze the wires breaking-induced vibrations of long-span power transmission towers, three finite element models of shield wire, conductor wire and tower were established with ANSYS/LS-DYNA.
基于有限元程序ANSYS/LS-DYNA，分别建立以等效弹簧代替塔对线路作用的导线、地线模型和以等效弹簧代替线路对输电塔作用的直线塔模型。
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