In drilling an oil well, mud is used to lubricate the cutting bit.钻油井时, 泥浆被用来润滑钻头.Lubricate adjuster screw threads and pivot with spray lube.使用喷雾润滑油润滑调整器螺丝螺纹和枢轴.You should lubricate the wheels of your bicycle once a mont...
沃舒格尔河在波特兰附近注入哥伦比亚河。The Washougal empties into the Columbia River near Portland.一场关于当代雕塑的重要展览即将在波特兰美术馆开展。A significant exhibition of contemporary sculpture will be on view at the Portland Gallery.他应从波特兰那里收买什么文件?What docum...