The technology of high voltage DC switching power supply has been successfully developed in advanced countries, but is under development in China.
在国外高压大功率开关电源技术已较为成熟，我国对这方面的研究也一直在进行，但目前还不成熟。
Water hung in the new Stone Towers is a hardware factory specializing in high-frequency switching power supply shell collection development, design, manufacture and marketing in an enterprise.
里水雄韬新四通五金厂是一家专门从事高频开关电源外壳的集开发、设计、制造和销售于一身的企业。
Water hung in the new Stone Towers is a hardware factory specializing in high-frequency switching power supply shell collection development, design, manufacture and marketing in an enterprise.
里水雄韬新四通五金厂是一家专门从事高频开关电源外壳的集开发、设计、制造和销售于一身的企业。
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