OBJECTIVE: To analyze the chemical constituents of Zanthoxylum oil.

目的：分析花椒油的化学成分。

youdao

Methods: GC-MS machine was used to analyze the chemical composition in volatile oils.

方法：利用GC-MS气质联用仪对香附炮制前后的挥发油进行成分分析。

youdao

Objective:To analyze the chemical compositions of volatile oil from Sparganium Stenophyllum.

目的：分析细叶黑三棱挥发油的化学成分。

youdao

It may be several weeks before they can analyze the powder using the craft's onboard chemical test-kit.

WSJ: Rover on Mars Extracts First Rock-Core Sample