Definition of: ISDN (Integrated Services digital Network) an international standard for switched, digital dial-up telephone service for voice and data.
定义：ISDN(综合服务数字网络)，是一个国际转换标准，是为了语音和数据的数码拨号上网电话服务。
Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.
介绍了一种采用CMOS数字电路、数字拨盘开关整定、无辅助电源的断电延时继电器的组成及工作原理。
The article discusses about the proper selection of static relay test points through introducing the contactor sketch of rectifying static relays with digital dial switches and easy-happening faults.
通过对静态继电器整定用数字拨盘开关接点转换示意图和易发生的故障介绍，初步探讨了静态继电器的测试点的合理选择方法。
The high-pitched shrieking of dial-up modems, once the herald of a new digital age, now increasingly evokes a bygone era. It may even make some users feel nostalgic.
调制解调器拨号时如铺沥青般的刺耳声音，曾经成为新数字时代的代表标志，但如今也不过只是凭添使用者怀旧的忧伤。
Modem enables the mutual conversion of analog signals and digital signals. Dial up connection is impossible without medom.
调制解调器是实现模拟信号和数字信号互相转变的设备，通过它用户的电脑才可连接因特网。
The control panel comes in a dial or a digital display.
控制面板有旋钮或按键式的。
Using AT89C2051, adopting inlay data-processing technique, the simulated dial pith can be driven by digital drive.
以at89c 2051单片机为核心，运用嵌入式数据处理技术，实现模拟表芯的数字驱动。
Dial gauges, gridding lines and digital camera were used to monitor quantitatively and write down qualitatively the deformations and displacements of the models.
采用百分表、网格线和数码相机，对模型的变形和位移进行监测和记录。
Dial is digital with EL backlight with afterglow tanning timer.
表盘以EL背光计时器与数字。
An instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.
仪表，钟：除了时钟以外的测量或指示时间用的仪器，尤指一种有数字表盘、移动指针或数字显示的机械或电子仪器。
Only when the LED is turned on, the dial is formed with such light transmittance that the digital display of the LED can be viewed through the dial.
表盘被制造成具有只有当LED被接通时才可以通过表盘看见LED的数字显示的光透射率。
The display screen is pointer dial type or digital display type.
显示屏为指针刻盘式或数字显示式。
永久数字分度盘。
永久数字分度盘。
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