介绍了石油钻杆端部镦锻加厚工艺基本原理及加厚方式.The basic principle and the method of oil drill pipe end upsetting process were presented.本文介绍了先进的TR镦锻法制造曲轴毛坯的工作原理.The paper introduces the working principle in making crankshafts by using advanc...
他会把钢丝绳拴在汽车底盘上，用卷扬机把汽车吊到运河岸上。He would attach a cable around the chassis of the car and winch it up on to the canal bank.起重机把汽车吊到轮船上.The crane put the car on to the ship.公司 长期 供应各种进口, 国产 二手 汽车吊.Long - term supply of import...
The weather forecast is for showers and overcast skies...天气预报上说多云并伴有阵雨。The day is overcast and humid.天气多云潮湿。It was muggy and overcast.天气闷热潮湿，而且天色阴沉。The weather forecast is for showers and overcast skies.天气预报上说多云并伴有阵雨。The...