alphabetic-numeric；alphameric;alphanumeric

Normal use of letters except physical quantities and units in chemical manuscripts;

化学稿件中非量和单位字母的规范用法

A letter recognition system based on neural network is developed by using Matlab 6.

5和VisualC,设计一个字母识别系统。

While in a linear writing of English letters,it is not the forms but the sound that expresses the meaning.

英文则属音素文字范畴 ,以表意为主 ,它形不写意而写音 ,是一种“听音辨义”、“意入心通”的线性文字 ,但也偶有例外 ,英文字母除拼合组词外 ,有时也会具有一定的象形构词作用。

With the development of times, letters form phrases more frequently,which arises disputes about the pronunciation of the letters.

随着时代的发展,字母入词现象越来越多,促使字母读音出现争议。