With the increase of the cutting power, the cutting pressure demand decreases. And the cutting velocity range is extended broadly.

超声切割功率的提高，有利于减小切割压力，拓宽切割速度范围。

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This is when the sudden pressure of demand on supply cannot be met, and demand must, in effect, be cut back by higher prices.

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Concurrently, greater availability of wireless broadband Internet, shared network printers, and mobile computing has made it easier for groups to share printers, putting additional downward pressure on demand for printers.

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As savings and credit for this group exhaust, more downward pressure is placed on demand.

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