真21比气动调节继电器信号室力臂，即输出的压力信号的压力比是无限可调。
The Model 21 Adjustable Ratio pneumatic relay has a signal chamber lever arm, whereby the ratio of output pressure to signal pressure is infinitely adjustable.
我们采取了适当措施，来拦截发射到测试实验室的无线电干扰信号。在此以后，我们自己测试了这次攻击，证实了使用正确设备是有可能阻断信号的。
After taking appropriate measures to contain the RF interference to our test lab, we tested the attack out for ourselves, and were able to verify that it's possible with the right equipment.
iPhone的信号强度需要在消声室中进行。
An anechoic chamber is used to test the iPhone's signal strength.
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