半圆型开孔防波堤
semi - circular perforated breakwater
闭开-开闭形态学梯度
close-opening-open-closing morphological gradient
不均匀开孔均汽板
homogeneous steam panel with nonhomogeneous ho
侧向连续开孔
Continuous Holes in Lateral Wall
大开孔
large hole
the Large Nozzles
large opened
big opening
large openings
Large nozzle
big hole
large opening
cylindrical shell with large opening