For each specification,we provide two tests of the production model.In all cases the technology matrices that we use are based on the fitted values obtained in the previous section. Furthermore,we express both measured and predicted factor-content numbers as a share of world endowments in efficiency units."This adjustment eliminates the units problem and enables us to plot both factors in the same graph.The production Slope Test examines specifications(PI)to(P5)by regressing the Measured Factor Content of Production (MFCP)on the Predicted Factor Content of Production(PFCP).'For example,in specification(PI)this involves a regression of BfYc on Vfc.The hypothesized slope is unity,which we would like to see measured precisely and with good fit.
    对这个划红线的句子，我查了些资料，也弄不懂它是什么意思，尤其是这个Slope Test ，那位同学看的懂它帮忙翻译一下吧，先谢谢了。