单词：riveted weld joint
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用mp3背四级单词
1.Computer-Aided Manufacturing(CAM) 计算机辅助制造 A: Is CAM used in China? B: Yes，it has been uesd in China for almost twenty years. A：在中国有使用CAM的吗？ B：有啊，在中国使用已经将近20年了。 2.Hot working 热加工 A: What are the hot working proc
天天商务口语
After a stop-over in Germany, democratic presidential hopeful Barack Obama is due in Paris Friday, where he is expected to meet with President Nicolas Sarkozy. Lisa Bryant has more for VOA from the French capital. As elsewhere in Europe, the U.S. pr
VOA标准英语2008年（七月）
异构是相对于同构而言的。异构词是指在拼写上只相差一两字母的两个或几个单词，若异构词里有一个是我们所熟悉的，就可以拿来记忆其他不熟悉的异构词（GRE单词）。异构法最适合记忆中
雅思英语
Defense Secretary James Mattis said today that a reduction in U.S. troops participating in joint military exercises with South Korea this week is not related to increased tensions with North Korea. More than 17,000 U.S. troops are expected to be a pa
PBS访谈社会系列
navigability 适航性 dismantle 拆除 commemoration纪念 tilting 倾斜的 monorail 单轨铁路 ribcage 胸廓 weld 焊接 bolt 插销，螺栓 hydraulic 水力的 clamp 夹紧，固定住;夹钳，螺丝钳 axle 车轴 revolution 一周(转) cog
雅思英语