Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution.
无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。
Chaos control is a potential mechanism producing edge of chaos but is absolutely not the only one, and all the rest of mechanisms and relative problems are sill unresolved.
而混沌控制是产生混沌边缘的一种可能机制，但绝不是唯一机制，所有其他机制以及有关问题在目前看来还未解决。
Chaos control is a potential mechanism producing edge of chaos but is absolutely not the only one, and all the rest of mechanisms and relative problems are sill unresolved.
而混沌控制是产生混沌边缘的一种可能机制，但绝不是唯一机制，所有其他机制以及有关问题在目前看来还未解决。
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