A runaway escapement is a mature part which is widely used in a missile , rocket and medium or large calibre high explosive projectile , and its features have been studied .
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美
释义
无返回力矩钟表机构是一种广泛用于导弹、火箭弹和中大口径榴弹上的成熟部件,前人对它的特性作过许多研究工作。
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