Now Groupon is changing its model in response to competition and critics who say deals are too few and the cost is too high.
现在Groupon正在改变模式应对竞争者和批评者，后者批评说交易处理的太慢，而且费用太高。
Response parameters are compared in a bivariate model that graphically depicts vectors of changing biomass production or nutrient uptake relative to competition free treatment.
它基于矢量分析和线性分析，将代表生物量和营养吸收值的参数相对于无种间竞争的对照在一个两维的坐标系内表达为矢量并进行定位比较。
We analyze the replacing of the hydropower consumption competition with the coal, the oil and natural gas consumption using the VAR model the pulse response impact function.
运用VAR模型的脉冲响应冲击函数，进行水电消费与煤炭消费、石油消费、天然气消费之间的替代性分析。
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