If the tubing is to remain in a place , the end is clamped.
如果要固定导管,就要夹住管端.
Nowadays, are three prominent multilevel topologies, diode-clamped multilevel inverter, capacitor-clamped multilevel inverter and cascaded multilevel inverter.
目前常见的多电平逆变器主要有三种:二极管箝位式 、 电容箝位式和级联式.
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