针对大庆石化分公司线性低密度聚乙烯装置粉料输送系统进行安全性论证。
The safety demonstrations for powder material conveying systems on Daqing Petrochemical Company LLDPE units are conducted.
本文对某电厂锅炉汽包损坏短管的现场修复焊接工艺以局部试样全条件模拟方法进行了焊接试验分析及其安全性论证。
This study made a localized full-condition simulation test and safety estimation for site repairing welding of a damaged boiler vessel tube.
“触及指令”，一项用来鉴别已被人们大量使用的化工产品是否对人体有毒的计划，需要对它们的安全性进行科学论证。
The REACH directive, an effort to identify whether chemicals that are already used in vast quantities could be toxic to people, requires that their safety be demonstrated scientifically.
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