如何正确选择频率有时甚至会关系到该应用能否取得成功。
The right choice is essential to the success of the application.
因此，如何正确选择企业财务预算控制模式的研究不但具有理论价值，而且也具有实用价值。
Hence, the research on how to select the right enterprise financial budgetary control mode is not only of great theoretical importance, but also practical importance.
论述了变频调速时拉矫电机工作特性的变化，探讨了如何正确选择和匹配交流拉矫电机和变频器。
The change of working characteristic of withdrawing-straightening motor drived by inverter is described and how to select the motor and inverter discussed.
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