| 摘要 |
<p>The device has a washer (80) movably mounted with limited translation on a surface of an end (62) of the spacer that is opposite to another end (61) of the spacer according to a longitudinal direction. The spacer includes a length value similar to a value of a distance value between an interior surface (121) of a first wall (12) and an interior surface of a second wall (11) of a hollow body (1), where the device, during its use, makes the second wall of the hollow body to be sandwiched between the washer and the surface of the former end of the spacer.</p> |
