护盾必须有生命值
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[*] 如果护盾没有生命值（护盾值），则给它添加5000点HP。
[*] 护盾被打破后，如果没有默认充能时间，则可以在90秒（5400 ticks）后恢复。
[*] 对于原版游戏，适用于机械族低角护盾、便携护盾背包、灵能折跃护盾。
[*] 同样适用于mod添加的护盾。
[*] 5把速射机枪，4轮射击，大概可以破坏这个护盾。
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Shields Must Have Hit Points
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[*] If a shield does not have Hit Points (Shield HP), it must be given 5000 HP.
[*] After a shield is broken, if it doesn't have default charging time, it will regenerate after 90 seconds (5400 ticks).
[*] For the vanilla game, this applies to the Mech Low-Shield, Low-Shield Pack, and Skipshield.
[*] This also applies to shields added by mods.
[*] 5 miniguns, firing 4 volleys each, should be able to break this shield.
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