Crushing functions of a rotary crusher are achieved by its crushing cavity consisting of an eccentric rotary roller arid a fixed notch crushing plate.

回转式破碎机的破碎功能是通过偏心回转辊和固定凹面破碎板组成的破碎腔来实现的。

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Such programs are much needed because in many arid lands there is only a vague idea of the extent of groundwater resources.

这样的计划是非常必要的，因为在许多干旱地区，我们并不清楚其地下水资源的范围。

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A lingering drought has pushed this already arid region to a water crisis.

持续旱情使得本就干旱的该地区面临一场水危机。

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The researchers say the toolmakers at Jebel Faya may have reached the Arabian Peninsula at a time when changes in the climate were transforming it from arid desert into a grassland habitat with lakes and rivers.

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It's a smattering of small wood and mud huts, about an hour's drive from Tete in a harsh arid environment.

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Semi-arid California would seem a logical place to regulate water efficiency.

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