介绍动态显示电路和能够移动小数点、熄灭无效零的显示程序。

The intelligent instruments dynamic display circuit and program with moving decimal point and blanking invalid zero were discussed in this paper.

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该公式中用到的一些值可能是无效的—例如，除数为零。

Some values used in that formula may be invalid — for instance, dividing by zero.

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该组合键无效。组合键必须由零或多个组合键和一个单键组成。

This key combination is not valid. Key combinations must consist of zero or more modifier keys and a single key.

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