A set of fundamental equations that consist of four formulae and contain seven pitch parameters is established through the pitch cone geometrical relationship of a pair of hypoid gears.是什么意思_A set of fundamental equations that consist of four formulae and contain seven pitch parameters is established through the pitch cone geometrical relationship of a pair of hypoid gears.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句