达能营养中心 关键词： 贫血 儿童青少年 铁缺乏 铅过载 [gap=1774]Key words: anemia; children and adolescents; iron deficient; lead over load
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High level shunt may lead to over-load volume, subsequently the expansion of left ventricle.
分流量大者可出现左室容量负荷过重，左房、左室扩大。
SAPF, which only has better inhibition to current-type harmonic source, is not only less inhibitory to the voltage-type harmonic source, but also lead to harmonic amplification and load over current.
电网中不仅含有电流型谐波源负载，还存在大量电压型谐波源负载，并联型有源滤波器只对电流型谐波有较好的抑制作用，对电压型谐波不仅抑制效果较差，还会引发谐波放大，负载过流。
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