The earliest muzzle-loading rifles were more difficult to load than smoothbore muskets, but the invention of metallic cartridges made possible the development of breech-loading mechanisms.
最早
前
步枪
比滑膛枪困难，但金属药筒
明促进了后膛
。
The earliest muzzle-loading rifles were more difficult to load than smoothbore muskets, but the invention of metallic cartridges made possible the development of breech-loading mechanisms.
最早前步枪比滑膛枪困难，但金属药筒明促进了后膛。
明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件
观点；若
现问题，欢迎向我们指正。
