The frequency of DFB LD was driven and controlled through such technology as constant current, temperature control in active area, wavelength lock and etc.
该方案通过采用恒流源、有源区温度控制以及波长锁定等技术方法来实现DFB LD的稳频驱动及控制。
Based on industrial PC and PLC technology, a fully automatic specific numeric control system is designed and implemented for large-scale key machining in car lock production.
为了在汽车锁生产中实现大规模钥匙加工，设计并实现了一种基于工业PC和PLC技术的全自动专用数控系统。
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