词汇	conservative semigroup
释义	conservative semigroup 保守半群
随便看	radio-freqnency resonator radio freqnency transformer radio-freqnency transformer radio freqneucy oscillator radio-frequcncy discharge Radiofrequecy cather ablation radio frequecy identification technology radio frequence Radiofrequence ablation radiofrequence catheter ablation radiofrequence endovenous closure symdrome radiofrequencies radio frequencies radio-frequencies Radiofrequencv ablation radiofrequency radio-frequency radiofrequency ablaion radio-frequency acceleration radio frequency accelerator radio-frequency accelerator radio frequency adapter radio frequency admittance radiofrequency alternator radio frequency