Abbreviation for submachine gun.

• Compact automatic firearm for close-range combat.
• Common in military and gaming contexts.

“冲锋枪”的缩写。

• 用于近距离作战的紧凑型自动火器。
• 常见于军事与游戏语境。

Abbreviation for sequential manual gearbox.

• Electronically actuated manual transmission without a clutch pedal.
• Used in some performance or racing cars.

“序列式手动变速箱”的缩写。

• 电子控制的手动变速器，无离合器踏板。
• 用于部分性能车或赛车。