dam shell 中文意思是什麼
dam shell
解釋
壩殼-
Adoption of hard shell dam for rehabilitation of water - damaged zhucun amp; amp; panshan dams
盤山兩座水毀大壩修復中的應用 -
The gravelly soil is a better kind of damming material. it ' s usually used as impervious core and also as dam shell
礫質上是一種良好的築壩材料,既能作防滲材料,又能填築壩殼。
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