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Security arrangement for doors and windows - uses lock casing comprising U-beams or tube profiles, allowing limited opening
Security arrangement for doors and windows - uses lock casing comprising U-beams or tube profiles, allowing limited opening
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机译:门窗的安全装置-使用包括U型钢或管型材的锁壳,允许有限的打开
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摘要
The lock casing has two central which have apertures for links. The one hole has a smaller aperture for the narrowing part of the link, and the other accommodates the larger part of the link, has free opening, and serves to control the link.
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