Virtual chamber theory describes a new method used to test equipments EMI in normal environment that is based on adaptive noise cancellation system.
虚拟暗室的测试理论是用于普通环境下的EMI测试的新方法，它的基础是自适应噪声抵消系统。
The largest Chinese space environment test facility for manned spacecraft is one of five typical space environment test facilities in the world. The vacuum chamber consists of three parts.
我国的载人航天器空间环境试验设备，是国际上五大典型空间环境试验设备之一。
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