恒温浴：容量，20l；形式，内外两层缸(双缸)。
In the constant temperature bath: capacity, 20l; form, the two outer layers cylinder (double).
双缸双喷淋二次过水设计，漂洗效果更彻底节省能源，提高效率。
More efficient cleaning result and energy save because of the pre-wash and second rinse designs.
本文对双缸液压电梯的结构形式、液压系统和控制原理作了简要分析。
This paper introduces briefly the structure, hydraulic system and control principle of a testing twin plunger hydraulic evelator.
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