非金属超声波探测仪 non-metal ultrasonic detector 非金属轴承 non-metallic bearing 非金融企业 nonfinancial business; nonfinancial enterprise ..
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non metallic bearing 非金属轴承
non-metallic bearing surface 作动筒内支承骨架
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Planes already use metallic foam in non-load-bearing parts, to reduce weight.
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