Battery electric car battery should periodically check the electrolyte level in use, timely check and supplement of the electrical condition of battery.
蓄电池电动平车蓄电池在使用中应定期检查电解液的高度，及时对蓄电池的存电状况进行检查和补充。
Objective it is probed into serum electrolyte level and the relation between it and function of heart or lung of the senile patients with chronic pulmonary heart disease.
目的探讨慢性老年肺心病急性加重期血清电解质水平及与年龄、心肺功能的关系。
The level of electrolyte needs to be checked periodically, and distilled water needs to be added when it is low.
应定期检查电解液的液位，如果液位太低，需要添加蒸馏水。
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