... effective path length 有效光程长度 effective radiation exitance 有效辐（射）出（射）度 effective range 有效范围；有效量限；测量范围 ...
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effective optical path length [动力] 光通道有效长度 ; 滤纸式烟度计
effective optical path standard length 基准光通道有效长度
effective flux path length 有效磁通程长度
This article has shown that it is necessary to distinguish the eikonal function, effective optical path and geometrical length etc. of active medium while investigating optical resonators.
本文指出，在光学谐振腔的研究中应当区分用程函、有效光程、激活介质的几何长度等物理量。
Analyzing the main yield characters such as stalk length, diameter, effective stalks per hectare and cane yield using the correlation and path coefficient of 12 varieties of sugar-fruit cane.
对12个有望作为糖果兼用蔗品种推广的甘蔗品种的产量性状如株高、茎径、公顷有效茎、蔗茎产量等进行了相关及通径分析。
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