The class idempotent function composing systems of orthogonal idempotents is one of the fundamental tools in constructing symmetry functions and it plays an important role in symmetry designs.

构成这些正交幂等系统的类对称算符，是构造对称函数的基础工具之一，其在对称设计中扮演着重要的角色。

youdao

In addition to basic picture constructors like circle and rectangle, there's a hc-append function that combines pictures. When you start composing function calls in Racket, it looks like this.

有个叫hc - append的函数能把circle和rectangle这些函数生成的图片组合起来。

youdao

The first, The paper introduces the function, composing and classification of the manipulator, tells out the free-degree and the form of coordinate.

首先，本文介绍机械手的作用，机械手的组成和分类，说明了自由度和机械手整体座标的形式。

youdao