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1)  the scope of widening
范围拓宽
2)  widen the scope of products
拓宽产品范围
3)  Extend operation range
范围拓展
例句>>
4)  wide range
宽范围
1.
AC regulators of wide range and high quality;
宽范围高品质交流稳压电源
2.
Two novel types of wide range dual switch flyback DC/DC converters were proposed to overcome the disadvantage that duty cycle cannot exceed 50% in conventional dual switch flyback DC/DC converter and to maintain the advantage of low voltage stress for main switches.
为了克服传统双管反激变换器占空比不能大于50%的缺点,同时又保持主开关管低电压应力的优点,提出了两种宽范围双管反激变换器。
3.
After reviewing the state of the art of DC/DC converting and analyzing the common DC/DC topology, a serial newly applied topology - Wide Range Dual Switch Forward DC/DC Converter are proposed.
在单管正激和传统双管正激变换电路的基础上,提出了一系列新的应用拓扑—宽范围双管正激(Wide Range Dual Switch Forward)DC/DC变换电路。
更多例句>>
5)  bandwidth range
带宽范围
6)  Ultra-wide Range of Input
超宽范围
1.
A Design of Switching Power Supply Circuit with Ultra-wide Range of Input
超宽范围输入的开关电源电路设计
补充资料：范围
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