在三相电路中,三相电源是对称的,负载为三角形连接,那么当其中一相断路对其余两相的电流和功率没有影响。
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From 1959 to 2009, inflation-adjusted wages increased by 131 percent in the U.S. As a result, firms reduced the amount of labor they employed by nearly 20 percent
Firms operating in perfectly competitive markets try to maximize profits.
2、飞机颠簸是由于飞机在扰动层中飞行,绕过飞机的气流速度场的不均匀性,导致飞机的水平速度与垂直速度和飞机俯仰角瞬间发生跃变,从而使飞机升力发生突然改变,使得飞机承受了额外的负荷所产生的。