这些物理系统的测试依赖于对作用力、质量和能量守恒定律的标准设计实践。
Design and testing of these physical systems rely on standard design practices that employ the laws of conservation of force, mass, and energy.
不可预期的设计问题会不断出现，因为软件的容错能力很低—比物理系统低很多。
Unexpected design issues arise constantly because software has low failure tolerances - much lower than physical systems.
您不是从组中设计一个虚拟化系统，而是可以将一个已存在的物理系统转化为一个虚拟机系统。
Rather than designing a virtual system from the ground up, you can convert an existing physical system into a virtual system.
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