需求价格弹性绝对值小于1的情况。
对标准差的模拟结果偏低，相对误差的绝对值小于6.6%；
Standard deviation were all unpredicted and the absolute relative errors were less than 6.6%.
为了使五端口波导网络能较好地工作于六端口反射计中，要求各端口反射系数的绝对值小于0。
For the five-port waveguide junction properly to be used in a six-port reflectometer, needing the reflection coefficient looking into anyone port is less than 0.
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