生产或供应气体、液体及电力用的计量仪表，包括它们的校准仪表。
Gas, liquid or electricity supply or production meters, including calibrating meters thereof.
后一分钟，或因此，电压下降的更为缓慢，因为大多数的下降是由于现在不仅要被用于气体，在反应产生电力。
After a minute or so, the voltage declines much more slowly, as most of the decline is now due only to the gasses being used up in the reaction that produces the electricity.
具纯水系统或废水处理系统或空气污染防制系统制程冰水系统，特殊气体系统，电力系统改善与维护实务经验者尤佳。
Have experience with operating and improving for PW system, waste water system, air pollution system, PCW system, special gas system, electric power system.
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