In this paper; a closed V-type three-level system is studied.

研究了封闭的V型三能级激光系统。

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We've already cut down our prices to cost level. cut down v.

削减；砍倒我们已经将价格降到成本费的水平了。

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We've already cut down our prices to cost level. cut down v.

削减；砍倒我们已经将价格降到成本费的水平了。

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