Imperial/US

定义

英制长度单位,等于3英尺、36英寸或恰好0.9144米。

解释

Attributed to Henry I of England (1100 AD) as the distance from his nose to the tip of his outstretched thumb. The yard is the primary unit for American football field measurement (100 yards = 91.44 m). One square yard equals 9 square feet or 0.8361 m², commonly used for carpet and fabric pricing in the US.

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