当透射式烟度计检测用标准中性滤光片的中性程度不好时，这种影响会影响其研制结果及实际使用。
When the transmission type smoke meter examination is not good with the standard neutral light filter neutral degree, this kind of affect can affect its prepare result and the actual use.
当透射式烟度计检测用标准中性滤光片的中性程度不好时，这种影响会影响其研制结果及实际使用。
When the transmission type smoke meter examination is not good with the standard neutral light filter neutral degree, this kind of affect can affect its prepare result and the actual use.
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