roller-delayed blowback滚轮: contact roller; trolley whee ...延迟: delay; lag; defer; postpone; ...反冲: recoil; kickback; backswing; ...式: type; style滚轮延迟反冲: roller-delayed blowback下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:滚轮延迟反冲式，即可在微信中查询翻译
