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A new hollow shell formation method, the reverse bending process, is presented.
介绍了一种新型管坯成型方法——反弯成型法。
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The shell has a hollow cavity to hold the insulating reality.
一外壳，该外壳设有一中空容室，用以容置该绝缘本体；
youdao
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The shell has a hollow cavity to hold the insulating reality.
一外壳，该外壳设有一中空容室，用以容置该绝缘本体；
youdao