The ACR "rifles" used smoothbore barrels to fire single or multiple flechette per round, rather than bullets, to provide long range, flat trajectory, and armor piercing abilities.
炮弹（抛射
）
拥有稳定
外形，比如带尾翼箭状或球体，以此减小
射时震动。
,远大,长期;;;;;
;
射;, 空中;The ACR "rifles" used smoothbore barrels to fire single or multiple flechette per round, rather than bullets, to provide long range, flat trajectory, and armor piercing abilities.
炮弹（抛射）拥有稳定外形，比如带尾翼箭状或球体，以此减小射时震动。
Gymnast s Biohythm is that living things inherits the factor and long range specialized training coactions result.
体操运动员生节律性是生遗传因素和长期专项训练相互作用结果。
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