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。
2
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。
3
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.