It is a unit count that means nothing outside of its benchmark, but can be used to compare results within the same benchmark.

这是一个单元数，表示没有什么东西超出了度量，但可以比较基于同样基准的结果。

youdao

One texture unit, texture size limited to 512, vertex light count limited to 4.

一个纹理单元，纹理大小限制为512，顶点光数限制为4。

youdao

A counter used in the arithmetical unit to count the steps in multiplication, division, and shift operation.

在运算部件中，对乘、除、移位操作中的操作步进行计数所用的一种计数器。

youdao

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