preferential addition voting system按选择次序合计选票的投票制度
preferential voting method按选择次序投票方法
preferential voting system投票制;投票系统
optional preferential voting任意优先选举制
preferential elimination system of voting按选择次序淘汰投票制
N（名词） a system of voting in which the electors signify their choices, as of candidates, in order of preference 优先级投票制