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BUOYANCY BODY TENSION CONSTANT HOLDING MACHINE FOR MISSILE WITH BUOYANCY BODY, WEIGHT OF AIRFRAME THEREOF IS SLIGHTLY LARGER THAN BUOYANCY BY BUOYANCY BODY
BUOYANCY BODY TENSION CONSTANT HOLDING MACHINE FOR MISSILE WITH BUOYANCY BODY, WEIGHT OF AIRFRAME THEREOF IS SLIGHTLY LARGER THAN BUOYANCY BY BUOYANCY BODY