The analyze of this paper is based on the practice, it can provide bases to Straight Well as well as ERW drill string dynamic problem, it is valuable in engineering.是什么意思_The analyze of this paper is based on the practice, it can provide bases to Straight Well as well as ERW drill string dynamic problem, it is valuable in engineering.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句