这个研究成果对企图采用直接测量方法测量接触角的研究人员,带来很大阻力.Such observation have deterred most prudent investigators from attempting direct contact - angle measurements.羽化前经历对成虫触角的反应敏感性有一定影响.Preadult experience can influence the antennal sensit...
综述了石油钻杆接头失效的十一种主要形式.Eleven mare modes of tool joint failures are summarized.那个钻杆的丝扣坏了, 换另外一根.That pipe thread is bad. Use another one instead.本文还介绍了微型钻杆测试系统压力瞬时分析方法.A systematic pressure transient analysis method for min...