Hight frequency output power 振荡功率
hight frequency ultrasound 高频超声
This pape studies the optimum design theory and practice of hight frequency high-power pulse transformer of arc welding inverter.
从理论和实践上探讨了弧焊逆变器的高频脉冲功率变压器的优化设计。
Objective To investigate the role of hight-frequency ultrasound and color doppler imaging(CDFI) in early diagnosis of complication following renal transplantation.
目的：探讨高频探头及彩色多普勒超声（C DFI）在肾移植手术后并发症的诊断意义。
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