Weapon systems, communication systems and so on in the modern war send electromagnetic waves with different intensity and frequency, which are pollution to the space.
在现代战场中，武器系统、通讯系统和干扰系统等均会发射出强度、频率不同的电磁信号，这些电磁信号会对战场空间构成严重的电磁污染。
The millimeter wave frequency with the advantages of the optic and the microwave exists between the frequency of them, and it's the perfect operation frequency of precision guidance weapon system.
毫米波的频率介于微波与红外频段之间，兼有二者的优点，是精确制导武器系统较为理想的工作频段。
The mechanical seal utilized in submarine's weapon ejection pump works under fluctuant working pressure and is used in low frequency, and high reliability is indispensable.
水下舰艇武器推进泵的机械密封装置的工作压力波动、使用频率小，并要求可靠性高。
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