ResultsBased on the classification of appraising criterion on acute toxicity test via mouth,skin and inbreathe with Wistar rat,LDS belonged to a feeb...
结论LDS对哺乳动物的毒性属微毒级,是一种新型的安全灭螺药。
ResultsBased on the classification of appraising criterion on acute toxicity test via mouth,skin and inbreathe with Wistar rat,LDS belonged to a feeb...
结论LDS对哺乳动物的毒性属微毒级,是一种新型的安全灭螺药。
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.
持续的、线形轮廓标通过勾勒道路轮廓的改变来提高道路安全性。
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