For example, the analysis of precision measurements of W and Z boson properties led to the accurate prediction of the top quark mass before the top quark had been directly produced.

• 举个例子，在以实验直接制造出顶夸克之前，我们就已经藉由分析W与Z玻色子相关性质的精密测量，而精准预测出顶夸克的质量。