Please translate the following sentences to sci Region I Academic English level 我们确实认识到混匀时间仅几秒的差异不能充分说明对脱硫率差异的影响为了更加直观地比较出桨型对脱硫率影响的差异我们对熔池内部重新划分区域并以包含死区的I3区域的颗粒体积分数作为评价叶轮搅拌效果的标准

"We do recognize that a difference of only a few seconds in mixing time cannot fully explain the impact on desulfurization rate differences. In order to more intuitively compare the differences in the impact of blade shape on desulfurization rate, we have redefined the regions within the melting pot and are using the particle volume fraction of the I3 region, which includes the dead zone, as the standard for evaluating impeller stirring efficiency."