The control system is the key element of the magnetic suspending system.磁力轴承的控制系统是磁悬浮硬盘的关键.CG - D central driving suspending frame sludge radial flow sedimentation.CG-D 型中心传动悬挂式刮泥机无中心支墩,桥架静止不动,土建结构简单.Suspending bracket d...
"Don't let that get you down," he said ruffling Ben's dark curls.“不要为那个感到沮丧，”他一边说，一边抚弄着本乌黑的卷发。He was long-limbed and dark-eyed, with a mop of tight, dark curls.他四肢修长、眼睛乌黑发亮，留着一头蓬乱浓密的黑色卷发。Erica was solemn, pulli...
H spent three hours learning Lincoln's Address at Gettysburg by heart.他花了三小时把林肯的《葛底斯堡讲话》背了下来。He lives about 60 miles upstream from Oahe, near Gettysburg, South Dakota.他住在奥阿希湖上游约60英里处，靠近南达科他州的葛底斯堡。Your friend already...