dual (EN)

形容词，名词

形容词 “dual”

1. 双重的
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   The smartphone features a dual-camera system for better photo quality.
2. 双数的（用于描述恰好代表两项的形式）
   In Ancient Greek, nouns had a dual form to specifically denote two items, like two eyes or two hands.
3. 对偶的（在数学和物理中，展示两个属性或概念以一种方式相关，使得一个可以转换成另一个）
   In quantum mechanics, particles have a dual nature, behaving both as particles and waves.
4. 对偶空间的（与一个空间的所有线性函数相关的空间）
   In linear algebra, the concept of duality is illustrated by how every vector space has a corresponding dual space consisting of all its linear functionals.

名词 “dual”

1. 对偶形（在几何学中，一个形状与另一个形状的面数与顶点数相同，反之亦然）
   In geometry, the dodecahedron and the icosahedron are duals, with the number of faces and vertices swapped between them.
2. 对偶函数（在数学中，与一个向量相关的函数，涉及计算该向量与另一个向量的乘积）
   In our project, we explored how each vector in our dataset has a corresponding dual in the dual space, which we used to calculate inner products efficiently.