To exploit the resources of shikimic acid, the content of shikimic acid in Masson pine leaf, Oriental arborvitae leaf and Star anise, the extraction and recovery experiments were studied by HPLC.

为了开发莽草酸资源，以高效液相色谱法分析了马尾松、侧柏以及八角茴香中的莽草酸含量，并研究了马尾松中莽草酸的超声提取、加热回流两种提取方法和不同加标水平的回收试验。

youdao

I feel the delicate symmetry of a leaf. I pass my hands lovingly about the smooth skin of a silver birch, or the rough shaggy bark of a pine.

我感到树叶的对称美，用手摸着白桦树光滑的树皮或是松树那粗糙的厚厚的树皮。

youdao

I feel the dedicate symmetry of a leaf. I pass my hands lovingly about the smooth skin of a silver birch or the rough shaggy bark of a pine.

我感到树叶的对称美，用手摸着白桦树光滑的树皮或是松树那粗糙的厚厚的树皮。

youdao

One of those surprises came during a visit to Eglin Air Force Base on the Florida panhandle, where he went to see the old-growth long-leaf pine forest.

CNN: Trekking 5,000 miles to connect man and wildlife