Air adjustment type transfer step comprises a random order transformers and a diocese the first part changes imposed in a single Ministry. The change in voltage is done by changing the section header of ngẫy machines. Standard tuning machine adjustment range is ± 10%, a few types are reversing course to create about 10% adjustment is subdivided into 5/8 or 1 1/4% per step change and for approximately ± 10% respectively have 32 or 16 speed choices.
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