大约一半的习题有答案,取二或三位有效数字。
Answers are provided to about half the problems, and are rounded off to two or three significant figures.
采用“三取二”原则、空气取样、系统自检等措施提高了系统可靠性。
In order to improve the system reliability, some measures such as "two out of three" principle, air sampling and self-verification were adopted.
根据国际标准提出了一种基于现货供应商品的二取二安全计算机方案。
According to international standards, a safety computer system with two out of two configuration based on Commercial-Off-The-Shelf is put forward.
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