分步进水序批式反应器（SFSBR）是一种依靠多步缺氧进水补充反硝化碳源的生物脱氮强化工艺。
The step-fed sequencing batch reactor (SFSBR) is a new type of the enhanced nitrogen removal system, characterized by a multiple anoxic feeding for supplying the organic carbon source to denitrifiers.
以拉西瓦水电站进水口快速闸门模型试验为例，简要阐述了步进电机的工作原理。
It briefly describes the working principle of stepping motor based upon the gate tests at the intake tunnel for Laxiwa hydropower project.
以拉西瓦水电站进水口快速闸门模型试验为例，简要阐述了步进电机的工作原理。
It briefly describes the working principle of stepping motor based upon the gate tests at the intake tunnel for Laxiwa hydropower project.
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