springing point
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/spɹˈɪŋɪŋ pˈɔɪnt/
British pronunciation
/spɹˈɪŋɪŋ pˈɔɪnt/

"springing point"的定义和意义

Springing point
01

弓脚, 拱脚

the point on a structure where an arch or vault begins to curve or rise
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