伴随着隆隆的低沉噪声，螺旋桨开始旋转起来。With a low-pitched rumbling noise, the propeller began to rotate.钻孔机和电锯的噪声过了半夜还继续响着。The racket of drills and electric saws went on past midnight.让受试者通过耳机听“白噪声”。"White noise" was played into the subje...
Bleeding from erosive gastritis was rarely life - threatening.腐蚀性胃炎的出血罕有危及生命的.Investigated charring erosive characters of internal insulation of solid rocket motor under flight acceleration.研究了固体火箭发动机内绝热层在飞行加速度条件下的炭化烧蚀特性...
在自动引导车的研究中,导航技术是其中的关键技术之一.Navigation is a key technique among the researches of AGV.一辆引导车将引导你.A follow me vehicle will guide you.跟着停放引导车滑到停机坪.Following the parking car to the apron....