aster-

Sweat trickles down my back as I traipse through a meadow of tall grass, ironweed, asters—and lots of poison ivy.

我疲惫地走在一片荒烟蔓草中，那里长著紫菀属植物和一大堆野葛。

OBJECTIVE The optimum extraction conditions of shionone from herbs Tatarian aster root were studied by means of orthogonal test and microwave-assisted and pressurized solvent extraction technique.

方法利用微波辅助加压剂提取法提取紫菀中紫菀酮,通过正交实验,考察了微波提取条件(包括剂、提取时间、提取次数和料液比)对紫菀中紫菀酮的影响。