Without external power source, Internal battery can ensure the time displays normally.
内置后配电池，保证无外接电源时，时间可常运转。
The new models of artificial hearts are expected to be equipped with an external power source.
预计给人造心脏的新模型配备一个外部能源系统。
Motion and speed are sensed without mechanical couplings, bearings, linkages or an external power source.
运动和速度感到无机械轴承，联系或外部电源。
It handles up to eight cameras and offers 24-vac or 28-vac selectable outputs to accommodate voltage drops without an external power source.
该装置可同时处理八个摄像机，提供24伏和28伏可选输出，无需外部电源就能适应电压下降。
Using light as an external power source can alleviate the weight and mass of having an onboard system, leaving room for scientific payloads, for example, and it provides more propulsive power.
利用光束作为外部能量源可以减轻火箭自身携带的系统重量和质量，为科学研究扩大有效载荷空间，并提供更大的推力。
Until now, they explained, an external source of electricity was required in order to power the process.
但是目前还需要提供外部电源来启动这个过程。
The mixer receives its power from an external DC voltage source.
该混频器接收来自外部直流电压源动力。
Splint fixation is an external fixation system, composed of retainer, splint, paper pad and traction. Pressure under retainer is the power source of splint fixation in treatment of fractures.
夹板固定是以固定带、夹板、纸压垫、牵引等装置所组成的局部外固定力学系统，固定带的约束力是夹板固定骨折的动力来源和外载荷。
The competition nowadays turns to between supply chains other than just single enterprises, and external customer demands are the power source for the supply chain.
现代的竞争已转变为供应链与供应链之间的竞争，外部客户需求是供应链赖以生存的源动力。
A new type of underwater welding system is studied, which includes an oscillating wire feed system and a welding power source with staircase external characteristic.
研究了一种新型的水下焊接系统。系统中弧焊电源输出阶梯型的外特性，送丝系统采用脉动送丝方式。
The paper analyzes the control algorithm of PI, external characteristic of power source and the feeding speed.
分析了PI控制算法、电源外特性控制算法、送丝速度控制算法，以及控制程序的优化设计。
The paper analyzes the control algorithm of PI, external characteristic of power source and the feeding speed.
分析了PI控制算法、电源外特性控制算法、送丝速度控制算法，以及控制程序的优化设计。
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