求翻译：变压器绕组变形测试仪、变压器低电压短路阻抗测试仪、直流电阻测试仪电力试验仪器的研发、生产（有许可要求除外）是什么意思？

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Transformer Windings deformation of the transformer tester, low-voltage circuit impedance tester, dc resistance tester electrical testing equipment R&D, production (with the exception of licensing requirements)

The transformer winding distortion reflectoscope reflector, the transformer low voltage short-circuit impedance reflectoscope reflector, the DC resistance reflectoscope reflector electric testing instrument research and development, the production (has permission request exception)

Tester, transformer low voltage winding deformation of transformer short circuit impedance Tester, DC resistance Tester power testing equipment research and development, production (except for the licensing requirements)

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