raca
英 ['rɑ:kə] 美 ['rɑkə]

adj.

一文不值的，无价值的；

权威例句

Aspirin and prophylaxis of thromboembolic complications in patients with substitute heart valves.
Carrier-Signal Selection for Sensorless Control of PM Synchronous Machines at Zero and Very Low Speeds
Measurement and Adaptive Decoupling of Cross-Saturation Effects and Secondary Saliencies in Sensorless Controlled IPM Synchronous Ma...
Measurement and Adaptive Decoupling of Cross-Saturation Effects and Secondary Saliencies in Sensorless-Controlled IPM Synchronous Ma...
Carrier Signal Selection for Sensorless Control of PM Synchronous Machines at Zero and Very Low Speeds
Modeling and Adaptive Decoupling of High-Frequency Resistance and Temperature Effects in Carrier-Based Sensorless Control of PM Sync...
Saliency-Tracking-Based Sensorless Control of AC Machines Using Structured Neural Networks
A comparative analysis of pulsating vs. rotating vector carrier signal injection-based sensorless control
Modeling and Adaptive Decoupling of Transient Resistance and Temperature Effects in Carrier-Based Sensorless Control of PM Synchrono...
Saliency tracking-based, sensorless control of AC machines using structured neural networks