Ningbo Jetta belt round of machinery factory is a professional manufacturing belt round, the timing belt to undertake other types of mold and mechanical components for processing enterprises.是什么意思_Ningbo Jetta belt round of machinery factory is a professional manufacturing belt round, the timing belt to undertake other types of mold and mechanical components for processing enterprises.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句