计量结果表明，影响牧户选择经营方式的因素有两个：草地的面积、和网围栏的成本。
The metering results show: there are two factors which influence herdsmen to choose management mode, they are the area of grassland and the cost of steppe netting.
最后从农业防治和化学防治两方面对其综合防治技术进行详细介绍，旨在帮助广大种植户选择最合适的防治方法。
Then the agricultural control and chemical control methods were described in details to help farmers choose the suitable control methods.
直到现在，天空电视的订购户上缴的增值税率也才只有20%正常税率的一半。税率优惠的原因是为了增加用户的选择余地，形成现在的双头垄断。
Until now, the VAT paid by Sky's subscribers has been half the normal 20% rate, a tax break designed to promote an alternative to the existing "duopoly".
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