单词：head hardened alloy steel rail
单词：head hardened alloy steel rail 相关文章
图片1 enemy n. 敌人，敌军 adj. 敌人的，敌方的 例句：After several fails the enemy was forced to retreat. 几经失败之后，敌军被迫后撤。 rival n. 竞争者 对手 v. 竞争，对抗 ，相匹敌 例句：After the national
漫画搞定六级词汇（文本+音频）
It's the best place in Wenatchee, I said to my husband, as I described the new Pybus Market. This all-year-round(1) shopping center and farmer's market is the latest addition(2) to Wenatchee. It is a real step forward for this town which, up until no
英语博客 A cup of English
379 、 石棉 asbestos;asbestus 380 、 石膏 PlasterofParis 381 、 示波器 oscilloscope 382 、 立体图 pictorialdrawing 383 、 交流电流 alternatingcurrent(a.c.) 384 、 交流电压 a.c.
英文名句短语
This is done by placing the blank in a steel case, or die, on which are carved all the marks that you see on one side of a penny. 这就要把坯饼放进一个钢制模具里面， 在模具上， 刻上了硬币一边的所有图案。 On another s
英国学生科学读本
On some French trains, the conductor's whistle signals more than just a departure. For commuters traveling on an express train from Reims to Paris a 90-mile, 45-minute ride it means the beginning of English class. Before the course, we were sleeping
英语语言学习
Next came the housing problem. 接下来是解决住房的问题。 This was simple. Many animals were in the habit of sleeping in dark caves. 这很简单。许多动物都有睡黑乎乎的山洞的习性。 Man now followed their example, drove th
美国学生人类历史