| 摘要 |
The neck (4) has filler opening (5) closed by lid (6) and containing glass piston (7) open towards filler opening. A drinking mug (8), placed on top (3) or neck of flask, has heat-insulating part (9) formed by thermally insulated gripper-ring (10) on mug's outer periphery. Ring has hollow cavities (12) formed by grooves open towards mug's outer surface which has a peripheral recess (11), on the inner surface of the gripper-ring. |
