lower pressure water chamber 下方的水压室
lower surge chamber 下调压室
N → another name for lower house
This is connected via a sealing valve to the larger, more powerful lower chamber, or ventricle.
通过密封阀与更大的，更强的位于下面的腔室——心室——相连。
The upper chamber on each side is called the atrium. This is connected via a sealing valve to the larger, more powerful lower chamber, or ventricle.
两侧的上腔室被称为心房，并通过一个密封瓣膜连接到更大更有力的下腔室（或称为心室）。
An unlocking door is arranged on the side wall of the upper chamber and the lower chamber is fully filled with heat absorbing and preservation materials.
上腔室的侧壁上设置有开启门；下腔室内充填满吸热保温材料。
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