| 摘要 |
PROBLEM TO BE SOLVED: To provide a spacer that is arranged in a storage container storing a mechanism and liquid with volume smaller than volume of an internal space, can adjust a liquid level height of the liquid, and can make a thickness thereof thin as much as possible while ensuring strength not broken even in expansion and contraction due to temperature change.SOLUTION: A spacer has a hollow part. Gas with a predetermined temperature in which maximum value of stress on the spacer, fluctuating according to temperature change on the inner side and outer side of the spacer, is reduced is encapsulated into the hollow part. |
