数字记录器

It is a control surface for the embedded digital audio mixer of either the Deva IV or V location recorders.

它是嵌入式数字音频混合器或位置记录器的一个控制界面。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

I recorded the interviews with a digital voice recorder and had them transcribed by a professional service.

我用数字录音记录器记录了这些访谈，并通过一个专业的设备进行了转录。

The tool cycle counter including a numerical display to indicate a cycle count, an actuator which is actuated by completion of a tool cycle, a counter assembly for recording a cycle count in response to actuation of the actuator, and being operably associated with the numerical display, and a substantially cylindrical outer housing encasing the counter assembly.

该工具循环计数器包括用来显示一循环计数的数字显示装置、通过工具循环的完成促动的致动器、用于相应于致动器的促动而记录下一循环计数并且与所述数字显示装置操作连接的计数器组件以及包围着所述计数器组件的基本上为圆柱形的外壳。

Our Sentinel system consists of a computer-controlled camera, fisheye lens and digital video recorder.

库克说：我们的'哨兵'系统由一台电脑控制的摄像机，鱼眼镜头和数字视频记录器构成。

The security unit is particularly useful as part of a memory unit that is attachable to a recording/reproduction device such as a digital audio recorder/player.

当安全装置用作可接装在记录／再现设备比如数字音频记录器／播放器上的存储器单元的一部分时，该安全装置尤其有用。

If a user operates an operation panel to input an instruction for normal playback, then a control circuit of a digital television monitor determines a frame to be played back at present as a noticed frame and requests the hard disk recorder for image data of successive 15 frames forwardly and backwardly adjacent the noticed frame and image data at positions of time intervals of 0.5 seconds within a range of 2 minutes forwardly and backwardly of the noticed frame through an IEEE 1394 cable.

如果用户操作操作面板输入正常播放指令，那么数字电视监视器的控制电路确定当前播放的一帧作为标记帧，并且通过IEEE1394电缆向硬盘记录器请求标记帧的向前和向后连续的15帧的图像数据以及标记帧向前和向后2分钟范围内在0.5秒时隙内的位置的图像数据。

The orthograph maps coded according to certain specification and the geological interpretive maps can directly input the digital explorative apparatus linked with GPS. On the fieldwork the geo-workers can carry out real-time, high-accuracy position and then write down the description of geo-objects, thus the method can greatly reduce labour intensity, enhance the working efficiency and the mapping quality, and improve the research precision, research degree and research cycle of traditional surveying in deed.

按照一定规格编码的数字正射遥感影像地图及其地质解译图可以直接输入野外数字采集器，并与手持GPS连接，在野外现场实时高精度地定点和描述记录，从而大大降低野外地质工作者的劳动强度，提高工作效率和填图质量，真正意义上改善了传统区域地质调查的研究精度、研究程度和研究周期。

The recoder a broadband digital instrument of large dynamic range, and can be used for recording earthquake data on the ocean bottom or in remote land areas.

海底地震数据记录器是一种大动态、宽频带数字仪器，能用于海底或陆地边远地区记录地震数据。

It shows up in embedded systems (parking meters, digital video recorders); inside Macintoshes; on a few million web servers; and is even becoming a desktop system for the masses.

今天， UNIX 的身影出现在嵌入式系统(如停车标尺器，数字视频记录器)，苹果电脑，数以百万计的网站服务器，甚至是越来越多的普通桌面操作系统等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。