Question

帮忙分析句子结构？

Numerical Control (NC) is a form of programmable automation in which the processingequipment is controlled by means of numbers, letters, and other symbols. The numbers,letters, and symbols are coded in an appropriate format to define a program of instructionsfor a particular work-part or job.

Answer 1

你好，楼主，该段文字共有两句话。第一句话从Numerical Control 到symbols.剩下部分为第二句话。
第一句话中包含一个定语从句，先行词是 automation，关系词in which在从句中the processingequipment…and other symbols 作地点状语，相当于where。
第二句话为简单句，主语为the numbers letters and symbols, be coded 是谓语动词 为被动结构，in an appropriate format 作状语，to defind 作目的状语。

Answer 2

other symbols. The numbers,letters, and symb