trass
导读：trass读音音标
英 [træs]美 [træs]
trass意思解释
n.火山土； 英英释义 TrassTrass is the local name of a volcanic tuff occurring in the Eifel, where it is worked fo
英 [træs]美 [træs]
trass意思解释
n.火山土； 英英释义 TrassTrass is the local name of a volcanic tuff occurring in the Eifel, where it is worked fo
trass读音音标
英 [træs]
美 [træs]
trass意思解释
n.
火山土；
英英释义
TrassTrass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar. It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff.
