The optimized design method of electro-hydraulic hammer about improving secu rity,reliability and reduc-ing manufacture and maintenance cost have been disc ussed.是什么意思_The optimized design method of electro-hydraulic hammer about improving secu rity,reliability and reduc-ing manufacture and maintenance cost have been disc ussed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句