对玫瑰精油制备方法进行了综述。按照化学物种类归纳了国产玫瑰精油的化学成分并对其香气特征进行了分析。
Then, according to chemical kinds, components and their aromatic characteristics of rose essential oil produced in China were summed up.
对熔炼室真空度、聚焦、原料棒化学成分、尺寸规格、熔炼速度,搅拌速度等对单品制备的影响进行了详细分析。
Influences of vacuum in the melting chamber, chemical composition and specifications of Mo and Mo-Nb alloy feed stock bar growing rate, rotation rate on processing Mo-Nb alloy are analyzed in detail.
主要讨论了钼-铌合金原料品质,包括烧结条的制备、原料的化学成分、原料棒的尺寸规格等对单晶制备的影响。
Influence of feedstock qualities of Mo-Nb alloy, including its preparation of sintering billet, chemical composition and specifications, on processing single crystal is discussed in detail.
详细列出了国内人工尘在粒径分布、化学成分及研究制备方面尚存在的问题。
The problems existed in particle size distribution, chemical composition and producing of domestic synthetic test dust are also proposed.
沿垂直膜面俄歇电子(AES)逐层分析证明,优化溅射工艺制备的薄膜化学成分分布均匀。
The results of AES analyses proved that the optimized composition is uniform along the cross-sections of the film.
采用等离子喷涂法制备了钽金属涂层,用电子显微镜分析了不同工艺条件下钽涂层的化学成分、表面形貌,测试了涂层与基材的结合强度。
Ta coating was prepared by plasma spraying, which composition and morphology were investigated using SEM, also the bonding strength between Ta coating and Al substrate was tested.
结论不同提取方法对大花红景天挥发性提取物化学成分的影响非常大,应根据临床用药的要求选用适宜的制备方法。
CONCLUSION Different extraction exert a great influence on chemical components of essential oil. The appropriate extraction should be used according to clinic requirement.
结论不同提取方法对大花红景天挥发性提取物化学成分的影响非常大,应根据临床用药的要求选用适宜的制备方法。
CONCLUSION Different extraction exert a great influence on chemical components of essential oil. The appropriate extraction should be used according to clinic requirement.
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