浮筒

Dahn line From a surface buoy a vertical drop line is positioned alongside underwater pinnacles in depths to 2,500 m.

延绳钓法将钓鱼线绑上无线电鱼标(浮筒),并(干)绳以一定间距布放带鱼钩之子绳。

27 Aft sponson aluminum alloy construction with machined frames and composite construction。 Houses main undercarriage and condenser for air conditioning system。

浮筒后部金，装架和空调系统的冷凝器。