美国稀土供应紧张现状冲击航天与芯片产业 特朗普拟访华寻求缓和

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Some of the components he designs are like "variable springs", he explains – motion-controlling parts able to go into reverse and soak up some impact from the ground below, say. "It can dynamically absorb load as you need it to."

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Adjustable type

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Екатерина Ештокина

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