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词汇 Throwing board
分类 英语词汇 英语翻译词典
释义

Throwing board

中文百科

投枪器 Spear-thrower

(重定向自Throwing board)

投枪器是一种利用杠杆原理来增加投枪的初速度的工具。其中一端有杓状或钩状的支撑物来固定住投枪的尾端,用户通常以一手抓住没有杓状或钩状物的那一端,以上臂和腕作动作将标枪投出。投枪器可以看作是手臂的延伸。这个延伸的长度可以使投掷者有更长的时间可以对标枪施力,让标枪获得更多动能即增加标枪飞离投掷者时的速度。使用投枪器很容易使投射物的初速超过150km/h。

投枪器在人的历史早期就出现在世界各地。

英语百科

Spear-thrower 投枪器

(重定向自Throwing board)
Bannerstone atlatl weight, ca. 2000 BC. Archaic peoples; Ohio.
Reindeer Age articles
Ceremonial atlatl, Peru 0-300 A.D., Lombards Museum
The thrower is checking to see that the dart has been correctly located on the spur of the spear-thrower; next she will turn her head in the other direction, aim and throw

A spear-thrower or atlatl (/ˈɑːt.lɑːtəl/ /ˈæt.lætəl/; Nahuatl:ahtlatl Nahuatl pronunciation: [ˈaʔt͡ɬat͡ɬ]) is a tool that uses leverage to achieve greater velocity in dart-throwing, and includes a bearing surface which allows the user to store energy during the throw.

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