The higher oil yield and better quality could be obtained with the root age of 20-24 months.

从根龄20—24个月的香根得到的精油产量最高，质量最好。

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The higher oil yield and better quality could be obtained with the root age of 20-24 months.

从根龄20—24个月的香根得到的精油产量最高，质量最好。

youdao