Is the transparent cover on the watch, we see the dial, read the time, there is a table can prevent dust, water vapor and other damage caused by the watch.
就是手表上那个透明盖子，通过它我们看到表盘，读取时间，还有表蒙可以防止灰尘、水气等对手表内部造成损害。
At the same time, do not open the back cover, so as to avoid dust, fiber, water vapor and other invasive table machine, affecting the normal travel time.
同时，不要随便打开手表后盖，以免灰尘、纤维、水汽等侵入表机，影响手表的正常走时。
All the calculation values fall under the allowance range of the international water vapor skeleton table published in 1985.
计算值全部落在1985年公布的国际水蒸气骨架表的允差范围以内。
All the calculation values fall under the allowance range of the international water vapor skeleton table published in 1985.
计算值全部落在1985年公布的国际水蒸气骨架表的允差范围以内。
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