床弩
- 网络Ballista
床弩-
北宋前期，宋人制造出了三弓床弩。
Sometime during the early Song dynasty , they rolled out the sangong chuangzi nu - the " triple-bow little bed . "
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在双弓和三弓床弩中，都有一种子弩，它是把特制的一个铁子系于弦上，子中可装普通箭数十支，一发可射出几十支箭。
A special iron case is tied to the string and dozens of ordinary arrows can be put into the case to be shot together .