2026-03-21 08:12 浏览次数 14
n. 幼虫的粪便;蛀屑
1. debris or excrement produced by insects
frass holes排粪孔
frass-drop落粪
fressen A gefressen-frass腐蚀
expelling frass排粪
frass tester弗拉斯试验器
dallis frass毛花雀稗
Automatic Frass Breaking Point Tester自动脆点试验器
Field tests showed that females gnawed significantly fewer oviposition scars on Pinus massoniana trees treated with hexane extracts of larval frass than on the control trees.
林间驱避试验结果说明,幼虫虫粪的己烷提取物处理过的树干上的刻槽数明显少于对照树干上的刻槽数,二者具有极显着差异;