| 摘要 |
<p>During the casing of a watch wherein a membrane (19) is arranged in the bottom thereof, an insulating and inert transparent liquid is introduced inside the casing while placing the lot in a housing under depression. Air is evacuated and the liquid fills the space comprised between the module and the walls of the casing. A small quantity of air contained under the membrane (19) expands under the effect of the depression and blows up the membrane, providing a compensation volume allowing then the thermal expansion of the liquid inside the casing without subjecting the wall of the latter to a mechanical effort. </p> |
