This method regulates speed by changing the number of steps of the additional resistor in the rotor circuit, so it's hard to realize smooth speed-regulation, also its performance is poor.
该方法是通过调节转子回路附加电阻的有级调速，难以实现平滑地调速，而且调节性能差，调速过程中大量的转差功率通过转子回路电阻转化为热能消耗掉了。
As the saying that no pain, no gain. We also need to work hard to realize our goals.
俗话说，没有付出，就没有收获。我们还需要通过努力工作来实现我们的目标。
To try hard to build Dalian into a famous cultural city is not only one of goals of building Greater Dalian, but also the important driving force to realize this goal.
努力创建文化名城，既是“大大连”建设的目标之一，又是实现“大大连”建设目标的重要推动力。
To try hard to build Dalian into a famous cultural city is not only one of goals of building Greater Dalian, but also the important driving force to realize this goal.
努力创建文化名城，既是“大大连”建设的目标之一，又是实现“大大连”建设目标的重要推动力。
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