Total U.S. hardwood log exports were down 25% through July despite modest year-on-year increases in Yellow Poplar (Tulipwood) and Birch shipments.
在7月，美国硬木原木出口下降了25%，尽管黄杨木和桦木出口量同比有所上升。
Total U.S. hardwood log exports were down 25% through July despite modest year-on-year increases in Yellow Poplar (Tulipwood) and Birch shipments.
在7月，美国硬木原木出口下降了25%，尽管黄杨木和桦木出口量同比有所上升。
Betulin and betulinic acid, the triterpenes of the lupane family, are considered to be potential agents against tumoral cancer and HIV .
桦木醇、桦木酸是具有羽扇烷结构的三萜
合物，目前的研究发现，它们具有较高的抗肿瘤、抗HIV病毒活性，它们的衍生物也有较高的生物活性。
声明：以上例句、词性分类均由互联网资
生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
