The Ramsey rule stipulates that to minimize excess burden, tax rates should be set so that the proportionalreduction in the quantity demanded of each good is the same.
Ramsey法则指出，为使超额负担最小化，税率的制定应当使各种商品的需求量减少的比例相同。
2
W 'th a ring type receiver at the top the night, of the lightning rod can be reduced and the degree of reduction is proportional to the radius of the ring.
顶部装有环形受雷器避雷针的高度可以降低，降低幅度与环半径成正比。
3
Results indicate the local high point height and additional tension stress of rolled strip are proportional to local high point initial height of strip, decrease as rolling reduction ratio increases.