知识问答
最佳答案:mig:金属极惰性气体保护metal inert gases(GMAW)TIG 钨极惰性气体保护电弧焊tungsten inert gases(GTAW)MMA
最佳答案:She came into the room,poured a glass or water,and sat in the sofa,watching TV.进
最佳答案:According to the above summary of quantum mechanics, we can know the electrons o
最佳答案:As for mentioned above, I think it's hard to define this word, for everyone, adj
最佳答案:Security is very important to everyone. Primary and middle school students and y