由混凝土或砌石筑成的靠自重保持稳定的坝。Adamconstructedofconcreteand/ormasonrywhichreliesonitsweightforstability. (共 93 字) [阅读本文] >>
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 由混凝土或砌石筑成的靠自重保持稳定的坝。Adamconstructedofconcreteand/ormasonrywhichreliesonitsweightforstability. (共 93 字) [阅读本文] >>