Compared to traditional instrument, virtual instruments have the advantage of price, flexibility and so on.

与传统仪器相比较, 虚拟仪器在价格 、 灵活性等诸多方面都占有优势.

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Demand for law also has flexibilities, such as price flexibility, cross flexibility and income flexibility.

法律需求也具有弹性, 主要表现为价格弹性 、 交叉弹性和收入弹性.

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