The tannin were extracted by water as the solvent from the seeds hull of acer truncatum with ultrasonic treatment.
利用超声波以水为溶剂提取元宝枫种壳中单宁，对超声功率、超声作用时间、水量、提取次数等因素进行研究。
Ultrasonic extraction of tanning with water from the seed hull of Acer Truncatum was described, and the influencing factors were studied.
利用超声波以水为溶剂提取元宝枫种壳中单宁，对超声功率、超声作用时间、水量、提取次数等因素进行研究。
The soil N_2O emission flux in the plantation of Acer truncatum and Piuns tabuleaformus woodland was measured in situ using static closed chamber technique.
用静态封闭箱式技术原位测定了西山地区元宝枫和油松两种人工林地土壤N_2O的排放通量，表明该地区森林土壤为大气N_2O气体一个重要的源。
Meanwhile, the resistance of the acer truncatum is improved, so that the air drying and freezing phenomena of the acer truncatum after winter completely disappear.
而且，提高了元宝槭的抗性，使元宝槭冬季过后枝条风干、冻干现象完全消失。
Taking 46 Acer truncatum introduced to Yunnan as the study materials, the variance of 9 fruit characters and the correlation between different characters were analyzed.
以云南引种的46株元宝枫的果实为研究材料，对其果实的9个性状变异和各性状间的相关性进行了分析研究。
The fatty acid methyl esters was prepared from Acer Truncatum buge oil, and the main influence factors of separating nervonic acid methyl ester by urea-inclusion method were analysed.
将元宝枫油制成混合脂肪酸甲酯，再应用尿素包合法对其中的神经酸甲酯分离的主要影响因素进行了正交试验研究。
The fatty acid methyl esters was prepared from Acer Truncatum buge oil, and the main influence factors of separating nervonic acid methyl ester by urea-inclusion method were analysed.
将元宝枫油制成混合脂肪酸甲酯，再应用尿素包合法对其中的神经酸甲酯分离的主要影响因素进行了正交试验研究。
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