引擎怠速-深沉, 引擎怠速-粗犷, 引擎怠速-平顺

2-second loopable sound, tank interior perspective, no background noise, high quality. --- 音效清单 1. 引擎怠速 / 行驶（车内） Diesel engine rumble, low pitch, constant drone, slight vibration. 2. 履带行驶声（车内） Heavy tracks rolling on mixed terrain, rhythmic metal clinking, dull thuds. 3. 主炮发射（车内） Muffled boom, sharp pressure thump, brief ringing, no echo. 4. 抛弹壳（车内） Metallic "ding" of ejected shell, light tumbling, final clank on floor. 5. 炮塔转动（车内） Slow electric whir, gear mesh, intermittent mechanical clicks. 6. 装甲被击中（未击穿/跳弹） High-pitched "ping" ricochet or dull heavy thud, single impact. 7. 弹药装填 / 炮闩闭锁 Solid heavy clank of breech closing, metal scrape. 8. 爆炸 / 损毁（短暂） Short low explosion, metal shatter, pressure wave.