给出了一种新型的 单相 航空静止变流器,分析了其工作原理和特性.A novel two - stage structure of single - phase aeronautical static inverter ( ASI ) is present.摘要介绍了单相电压型三电平四象限变流器工作原理.The working principle of the single - phase voltage - source 4 - qua...
Here the Nile broadens out between the huge granite boulders.尼罗河在此处变宽，从两块花岗岩巨石间穿过。Explorers traced the Nile River to its several headstreams in Central Africa.探险者在中非找到了尼罗河的几处源头.Where is the source of the Nile?尼罗河发源于何处?...
她患了夜盲症.She suffered from night blindness.他有夜盲症, 晚上看不见.He has night blindness , he is able to see nothing at night.这些医疗工作者会诊断出青光眼 、 夜盲症以及其他的眼部疾病.The workers look for conditions glaucoma, night blindness and other problems...
He was without question one of the giants of Japanese literature.毋庸置疑，他是日本的文学巨匠之一。Another of the giants was the Polish scientist Nicolaus Copernicus.另外一位巨人是波兰科学家尼古拉斯·白尼.Personally, I could care less whether the Giants co...
Location for presetting button of insert cards is right.各插卡予设定旋钮位置正确.Model TSDT digital tool presetters are precision instruments presetting tools outside NC machine tools.TSDT型数字显示刀具预调仪是数控机床机外预调刀具尺寸的精密仪器,适用于加工中心和数控机床.Th...