Digital variable frequency is a key technology of soft radio.
数字下变频技术是软件无线电中的关键技术之一。
Host fan with variable frequency control, steady speed, low power, accurate and reliable.
主机风机采用变频控制，调速平稳、省电、准确可靠。
Variable frequency motor drive, soft start, soft stop, stable and reliable, small impact.
采用变频电机驱动，软启动，软停止，平稳可靠，冲击小。
Variable frequency motor drive, soft start, soft stop, stable and reliable, small impact.
采用变频电机驱动，软启动，软停止，平稳可靠，冲击小。
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