Springald

A Springald, or espringal, is mechanical artillery device for throwing large bolts and less commonly stones or Greek fire. It is depicted in diagram in an 11th-century Byzantine manuscript, but in Western Europe is more evident in the late 12th century and early 13th century. It was constructed on the same principles as a Greek or Roman ballista, but with inward swinging arms. It was also known as a 'skein-bow', and was a torsion device using twisted skeins of silk or sinew to power two bow-arms.

单词	springald
释义	springald /'spriŋəld/ 英汉-汉英词典 n. 〈古〉年轻人，小伙子词组 \| 习惯用语您要查找的是不是： springboard n. 跳板；出发点 springing n. 弹动,弹跳,弹回 springlike 春天英语百科 Springald A Springald, or espringal, is mechanical artillery device for throwing large bolts and less commonly stones or Greek fire. It is depicted in diagram in an 11th-century Byzantine manuscript, but in Western Europe is more evident in the late 12th century and early 13th century. It was constructed on the same principles as a Greek or Roman ballista, but with inward swinging arms. It was also known as a 'skein-bow', and was a torsion device using twisted skeins of silk or sinew to power two bow-arms.
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springald /'spriŋəld/

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Springald