Based on an orthogonal design, the experiments have shown that proportion and time of leaf picking are the major factors to influence the thickness and output of Radix Astragali seu Hedysari.

运用正交设计，明确了采叶强度和采叶时间对黄芪根粗和产量均有显著影响。

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There are different leaf picking standards for tea production and flavone extraction.

采叶分为提取黄酮和制作茶叶两种用途，具有不同的采摘标准。

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Simpson's defense attempted to suggest Wednesday hair analysis is so vague it is like picking up a leaf and attempting to tell which tree it fell from.

CNN: June transcripts arranged by date.