1.ResultsBased on the classification of appraising criterion on acute toxicity test via mouth,skin and inbreathe with Wistar rat,LDS belonged to a feeb...

1.结论LDS对哺乳动物属微级,是一种新型全灭螺药。

2.LDS panels are formed to a unique shape and applied to concrete barriers and metal guardrails providing retroreflection across a wide range of entrance and observation angles.

2.持续、线形轮过勾勒道路轮改变来提高道路全。