半圆顶直立堤
semi-circular erected mixture breakwater
半圆顶直立混合堤
semi-circular erected mixture breakwaters
半圆型沉箱导堤
semi-circular caisson training jetty
半圆型开孔防波堤
semi - circular perforated breakwater
半圆型潜堤
submerged semi-circular breakwater
500t半圆体
500 t semi-circular cylinder
凹半圆铣刀
half-round concave milling cutter
半圆β谱仪
semicircular βspectrograph