Investigates the realization of DC electrical - closed loading technology and designs the QR 512 MT gearbox test bench.
研究了直流电封闭加载技术的实现,设计QR512系列手动变速箱交检加载试验台.
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If the ship is capable of closed loading, have the requirements for closed operations been agreed?
如果船能以封闭式装载, 有关封闭式操作是否已经协议?
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