求翻译：吸声尖劈的最重要的技术指标为：低限截止频率，非专业人士通常对该指标有认识上的误区，即会认为在此频率以下，消声室无法进行精确的测量，实际上该频率的定义为吸声尖劈吸声系数（驻波管，垂直入射）大于99%时对应的最低频率，实际上消声室在一定的测试方位和精度要求下并不一定强求六个面的吸声系数大于99%。低限截止频率与以下几个因素有关是什么意思？

Wedge of absorbing the most important technical indicators: low limit cut-off frequency, non-professionals are usually the indicators of cognitive errors, that is, the following will be considered at this frequency, the anechoic chamber can not be accurately measured, in fact, the Frequency is defin

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The sound absorption nib most important technical specification is: The lower cut-off frequency, the non-professional usually has in the understanding erroneous zone to this target, namely can think below this frequency, the dead room is unable to carry on the precise survey, the lowest frequency wh

Suction sound tip split of most important of technology indicators for: low limited due frequency, non-professional persons usually on the indicators has awareness Shang of errors, is will think this frequency following, anechoic room cannot for accurate of measurement, actually the frequency of def

Suction sound tip split of most important of technology indicators for: low limited due frequency, non-professional persons usually on the indicators has awareness Shang of errors, is will think this frequency following, anechoic room cannot for accurate of measurement, actually the frequency of def