buoyancy tube
... buoyancy transport device 浮力运输装置 buoyancy tube 浮力管 buoyancy 浮力 ...
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返注式套管浮力装置 fill-up floating equipment
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一般是经由鳃呼吸。大部分硬骨鱼有鳔,这是源于消化管的憩室,司控制浮力或为辅助呼吸器官。
Fish generally respire through gills. most bony fish es have a swim bladder a gas-filled organ used to adjust swimming depth.
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