Arbalest:
The arbalest (also arblast) was a late variation of the crossbow coming into use in Europe during the 12th century.
en.wikipedia.org
鋼弩:
鋼弩（英語：Arbalest、Arblast）是中世紀後期出現在歐洲的一種大型弩，它的弓身部分由鋼製成。
zh.wikipedia.org
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Arbalest鋼弩