求翻译：　在规定的频率和电压下，变压器能长期工作，而不超过规定温升的输出功率。是什么意思？

The required frequency and voltage, the transformer can be long-term work, but not exceeding the prescribed temperature of the output power.

The provisions under the frequency and voltage transformer can be long-term work, and do not exceed the maximum temperature rise of output power.

All has the corresponding specification to the different type transformer, available corresponding technical parameter expression.If the power transformer main technique states the parameter to include: Rated power, rated voltage and ratio-voltage, nominal frequency, the operating temperature rank,

　The prescribed frequency and voltages, transformer for long term, not exceeding a specified power output of a temperature rise.

　The prescribed frequency and voltages, transformer for long term, not exceeding a specified power output of a temperature rise.