keystone ['ki:stəun]

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n. ��ּ������ԭ��[��]Шʯ

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n. anchor��backbone��headstone��key

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1. Advancing suburban assurance is the difficulty and keystone of domestic insurance enterprise.
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2. The keystone of the article is analyzing industry structure of He Bei, analyzing industry from whole angle.
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3. Stating the function and usage of Keystone slotted pipes, Keystone slots manufacturing method by laser reliability of Keystone manufacturing method by laser.
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n.
  1. a central cohesive source of support and stability
  2. the central building block at the top of an arch or vault

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keystone
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keystone fault
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keystone slot
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keystone correction
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auto keystone
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