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关注：1
2013-05-23 12:21
求翻译：一种是采用功率器件直接串联构成，组成交－直－交调速系统是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
一种是采用功率器件直接串联构成，组成交－直－交调速系统
问题补充： |
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2013-05-23 12:21:38
One is the direct use of power devices in series, group turnover - DC - AC speed control system
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2013-05-23 12:23:18
One type is used to power devices constitute a direct concatenation - has been formed to adjust the speed system - Japan
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2013-05-23 12:24:58
One kind is uses the power component direct series constitution, the group deal - straight - hands over the velocity modulation system
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2013-05-23 12:26:38
A direct in-line with power devices constitute to form AC-DC-AC speed regulating system
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2013-05-23 12:28:18
A direct in-line with power devices constitute to form AC-DC-AC speed regulating system
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