electric jack hammer 电动凿岩机
electric track jack 电动起道机
electric screw jack 电动螺旋千斤顶
electric jack
电动千斤顶
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Former CEO of General Electric Jack Welch, 76, met his wife Suzy, 53, when she came to interview him for the Harvard Business Review.
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Nobody said it would be easy taking over at General Electric for Jack F.
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Former General Electric Chairman Jack Welch weighed in on Twitter with his own worries.
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