从理论上推导了扩张室消声器内可能存在的高次波。
The existence of higher order mode waves in expansion mufflers is proved theoretically.
微带线泄漏一般分为表面波形式和空间波形式两类，其中微带线高次模泄漏一般以空间波的形式发生。
The leakage of microstrip line has two forms: the surface wave form and the space wave form, and the higher order modes on microstrip line mostly leak as space wave form.
该标准代表风暴条件(波高和风速)的联合作用，这种情况平均每一百年仅出现一次。
It represents the combination of storm conditions (wave height and wind speed) which on average should occur only once every 100 years.
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