Subwoofer frequency adjustable. Gold-plated RCA input output connectors.
可调镀金的低音频率RCA输入输出接口。
The grove depth, frequency adjustable, to meet the need of different materials and thicknesses on demand.
开槽深度、次数可调，满足不同材料及厚度的开槽进刀需求。
This paper induces the lowest limit of frequency for variable-frequency adjustable speed and soft starting, gets the best starting frequency for soft starting.
本文推导出了变频调速及软起动的频率最低限，发现了软起动的最佳起动频率。
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