Abstract: Doubly-fed motors are extensively employed as high-capacity variable speed pumped hydro (VSPH) machines. The Fengning Pumped Storage Power Station in Hebei province constructed the first two ...
BEIJING -- China's domestically developed, world's largest-diameter high-speed-rail shield tunneling machine "Linghang" surpassed the 10,000-meter mark on Tuesday, leaving just 1,000 meters to reach ...
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