单词:straight tension rod
直接受拉钢筋
单词:straight tension rod 相关文章
40 Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ni
发表于:2018-11-28 / 阅读(273) / 评论(0)
新概念优美背诵短文50篇