浮筒

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

延绳钓法将主钓鱼线绑无线电鱼标(浮筒),并主(干)绳一布放带鱼钩之子绳。

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

浮筒后部为铝合金，装主起落架和空调系统的冷凝器。