For washing frequency, under normal circumstances, the best car once a week.
对于洗车频率，一般情况下，一周洗一次车最好。
Even under low frequency, residual loss exists still.
在低频率段，仍然存在剩余损耗。
Finally, it is applied for the design of varied-frequency control system under constant-pressure.
最后，应用于高精度变频恒压控制系统设计中。
Finally, it is applied for the design of varied-frequency control system under constant-pressure.
最后，应用于高精度变频恒压控制系统设计中。
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