条码码制
条码码制
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各类条码内部结构随码制而异;
The inside structures of all kinds of bar-codes are different according to the coding rule ;
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从开发带有学生信息的条码证件这个应用角度出发,介绍了在研制开发学生证件过程中条码的码制、代码长度和校验符等设计条件的要求;
Staring from developing the bar code certificate with students ' messages , the design conditions of the code order , the code length and the proofreader 's mark etc.