定义了系统最佳经济性工作区域和最佳经济曲线，并与传统内燃机驱动柱塞泵系统进行比较。
The optimal economic working zone and economic curve were defined and compared with traditional internal combustion engine driving plunger pump.
检察员说，“内燃机驱动或发动机驱动的消防泵都不是防震的，这些泵如果失效，电站内整个灭火系统和消防卷盘都将无法使用。
Diesel-driven and motor-driven fire pumps are not seismic and the loss of these pumps would make all suppression systems and hose reels in the plant unavailable.
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