trass / træs /

💦中学词汇鳟鱼鳟鱼的种类

trass 的定义

n. 名词 noun
  1. a light-colored type of volcanic tuff used in making water-resistant cement and mortar.

更多trass例句

  1. Sometimes a proportion of common sand mortar instead of lime is mixed with the trass.
  2. Trass, tras, n. a volcanic earth used as a hydraulic cement.
  3. After it has been quarried it is ground in mills, and used for cement stone under the name of trass.
  4. He wished that the Trass boy would talk forever about destiny.
  5. The Dutch are very attentive in ascertaining the quality of the trass before using it in building their dikes.