yuanhuatin 芫花酯丁yuanhuapine 芫花酯戊yuanhuadin 芫花酯乙yuan policy [新聞學(xué)與傳播學(xué)]人民幣政策yuan dynasty yuan (n.) yuan n. 元（中國貨幣單位）yu-lu 魚露yu hua yu gong [歷史學(xué)]《禹貢》yttrium n.釔(稀有金屬元素)yttric adj.釔的；含釔的yttria n.氧化釔ytterbium oxide 氧化鐿ytterbium doped yttrium lanthanum oxide [化學(xué)]摻鐿氧化鑭釔ytterbium (n.) ytterbium n.[化]鐿（稀有金屬元素；符號 Yb)ytterbite (=gadolinite)n.；矽鈹釔鑛ytterbic adj.含有鐿的ytterbia n.氧化鐿