It is supposed that the relation between the analog current and the summation of the digital current value of picture element is equal.
根据显象管阴极电流模拟值等于整幅图象的电流数字值之和的原理，可推出各象素的发射电流密度。
This article introduces three kinds of equal value definitions of function continuity, proves the equal value relation among them, and makes people understand further the continuity of function.
介绍了函数的连续性的三种等价定义，并对它们之间的的等价关系进行了互相证明，使人们更加深入地了解函数的连续性。
This article introduces three kinds of equal value definitions of function continuity, proves the equal value relation among them, and makes people understand further the continuity of function.
介绍了函数的连续性的三种等价定义，并对它们之间的的等价关系进行了互相证明，使人们更加深入地了解函数的连续性。
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