单词：roofing putty
屋面油灰
单词：roofing putty 相关文章
Lesson 8 A LUMP OF PUTTY 第八课 一块腻子（油灰） Did you ever see a man put in a pane of glass? He first cuts away the hard stuff which holds the old glass in its place. This hard stuff is called putty. Then with some fresh putty he fixes
发表于:2018-12-18 / 阅读(128) / 评论(0)
英国学生科学读本
英国学生科学读本
A key stage in the construction of Gongbei tunnel, which will connect south China's Zhuhai city with Macau, has been completed. Pipe roofing has now been installed to reinforce the tunnel, in one of the largest construction projects in China. The Gon
发表于:2019-02-13 / 阅读(234) / 评论(0)
cctv9英语新闻2015年
cctv9英语新闻2015年
Lesson21 A piece of slate 第21课 一块石板 Look at your slate, and see what it is made of. It is a very thin, smooth, grey stone. The pencil with which you write upon it is also a piece of soft slate. 小朋友, 看看你自己写字用的石板
发表于:2019-02-13 / 阅读(161) / 评论(0)
英国学生科学读本
英国学生科学读本