dyad

1.二分体；二联体something that consists of two parts

1.【数】并矢(量);【化】二价元素;【生】二分体,二分细胞

2.二个,一对,一双

3.〈美口〉双边对话,双边会谈;双边关系

1.二数的,二价的

1.two individual units, things, or people linked as a pair

2.an atom or chemical group with a valence of two

3.a mathematical operator consisting of two vectors expressed without a multiplication sign between them

4.a musical chord consisting of two notes