由于十分苛刻的材料要求，设计可见光波段的隐身斗篷更具挑战性。
Designing invisibility cloaks that can conceal objects from visible light has been more challenging due to the strict material requirements.
通过模拟炮射击试验，验证了吸波材料强度参数设计的正确性，证明隐身榴弹的发射具有安全性。
The experimental results of simulated gun show that the design of ram strength parameters is right, and the stealthy projectile fired by artillery is safety.
新的设计可以使隐身衣在相对更宽的光谱范围内使用，但是以前的隐身衣的可操作性光谱范围非常狭窄。
The new setup is upgraded to function for a relatively broad spectrum of light, whereas previous models had very narrow operational regimes.
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