YHBT you have been told 早就告诉过你了
YRM Voltage Regulator Module 电压调整模块(主机板)
YB Yellow Book 黄皮书
YP Yellow Page 黄页
YSF Yield Safety Factor 良率安全因素
YP yield point 屈服值
YTD Year To Days 年初到今日
YAS Yen Appreciation Surcharge 日圆升值附加费
yR. YELLOWISH RED 黄调红
yO. YELLOWISH ORANGE 黄调橙
YA Yellow Armor 黄盔
YWCA Young Women's Christian Association 基督教女青年团契
y/l your letter 你的信