y&z

1.[c][u]英语字母表的第 25 个字母the 25th letter of the English alphabet

2.[u]（代表未知数）used to represent a number whose value is not mentioned

3.[u]未知的人（或数、影响等）；未指明的人（或数、影响等）a person, a number, an influence, etc. that is not known or not named

1.英语字母表第二十五个字母

2.Y字形物

3.【数】第二个未知数

4.中世纪罗马数字150

5.【化】元素钇 (yttrium) 的符号

6.【数】纵坐标

7.【物】υ粒子

1.the 25th letter of the English alphabet. Y is a consonant.

2.used in mathematics for showing a number whose value you do not know