鎖鏈

鎖鏈，公元前225年的發明As early as 225 BC, chain was used to draw a bucket of water up from a well. This very early bucket chain was composed of connected metal rings.，是由連接件組成的串聯組件，這些鏈節通常由金屬製成，其總體特性與繩索相似，具有柔韌性和彎曲性，但同時亦具備剛性和承重能力，可以用於拖拉重物如船錨或配以掛鎖將物件上鎖。

 參考 

 外部連結 
National Association of Chain Manufacturers , NACM WELDED STEEL CHAIN SPECIFICATIONS
Chain Spec Basics , Grades and Links Explained

Category:链