需求、软件设计，甚至测试脚本与代码比较有相对短的预期寿命。
Requirements, software designs and even test scripts have relatively short life expectancies compared to code.
与通过施加压力来测试建筑砖块的结构完整性不同的是，软件设计者靠编写代码来测试他们的程序。
Instead of placing building blocks under measured forces to test their structural integrity, software engineers write code for their testing.
使用CVI软件设计了一种基于虚拟仪器的频谱分析仪，并将其运用于喷气织机振动传感器输出信号测试与分析中，建立了整个测试系统。
A VI-based spectrum analysis instrument using CVI software is designed and it is used to test and analyze sensor output signal of jet loom vibration. The whole testing system is established.
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