Most chordates have a high-pressure, closed circulation with a ventral heart.
大多数脊索动物循环具有高压的、封闭的循环系统，心脏位于腹面。
The water quality required in the closed circulation is generally of the soft water.
密闭系统所要求的水质一般是软化水。
The invention relates to a closed circulation pickling bath, and pertains to the pickling device technical field.
一种封闭式循环酸洗槽，属于酸洗装置技术领域。
The technology of the closed circulation and zero discharge in paper mills with waste paper as raw material is a mature one.
废纸作原料的制浆造纸厂全厂废水封闭循环和零排放的技术已经成熟。
In the closed circulation system of ash-sluicing water of coal-fired power plant, the scaling of the hydraulic ash transport pipes and the backwater pipes is the main problem that need to be solved.
在燃煤电厂冲灰水闭路循环系统中，水力输灰管和回水管的结垢是所需解决的主要问题。
The paper pointed out that the combination of those treatments would achieve a better result, and closed-circulation to improve use efficiency would be the terminal solution.
指出多种处理技术的联合使用将取得较好效果，而采用闭路循环、提高利用效率才是最终出路。
The paper pointed out that the combination of those treatments would achieve a better result, and closed-circulation to improve use efficiency would be the terminal solution.
指出多种处理技术的联合使用将取得较好效果，而采用闭路循环、提高利用效率才是最终出路。
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