The shock wave and strong pulse noise, which produced by light rocket launcher, are belong to a non stationary signal process with a wide frequencies.

便携式火箭发射器所产生的冲击波和强脉冲噪声属非稳态信号，具有较宽的频率范围。

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Neither the House nor the Senate ever specifically gave the green light to using a Delta rocket for the planned test mission.

WSJ: Lockheed Martin Sees Space Capsule Test Flight in 2013

These men have only very light weapons - machine-guns and rocket propelled grenades - and they have no answer when government forces decide to use heavy weapons, as they appear to have done overnight.

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The combination of the free-revving V6, a feather-light clutch and precise gear feel makes the IPL a rocket to drive.

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