Set the telescope focuser speed. Set speed to 0 to halt the focuser. 1-3 correspond to slow, medium, and fast speeds respectively.是什么意思_Set the telescope focuser speed. Set speed to 0 to halt the focuser. 1-3 correspond to slow, medium, and fast speeds respectively.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句