Analog systems were changed by rewiring; computer - controlled systems were changed by reprogramming.
模拟系统通过重新布线来改变, 而计算机控制只需通过重编程序来改变.
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Experience prototype and testing digital and analog systems.
样品试验,数据测试及模拟系统.
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Airplane manufacturers have now begun phasing out older analog systems and replacing them with digital systems.
飞机制造商现在开始逐渐淘汰旧式的类似系统,取取代之以数码系统.
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