The study work of safety science and technology is one of the important chains in the great system engineering.
安全生产是一个庞大的系统工程，安全科学研究工作是这个庞大系统工程中的重要链条之一。
The depth and range of safety science and technology study will greatly promote the safety work.
安全科学研究工作的深度和广度对安全生产具有重大促进作用。
The mark safety is a great system engineering. The study work of safety science and technology is one of the important chains in the great system engineering.
安全生产是一个庞大的系统工程，安全科学研究工作是这个庞大系统工程中的重要链条之一。
[Objective] The aim was to study nitrate and nitrite contents in Fenghuang tea and provide science basis for people's safety drinking.
[目的]研究凤凰茶中硝酸盐和亚硝酸盐的含量，为凤凰茶的安全饮用提供科学依据。
[Objective] The aim was to study nitrate and nitrite contents in Fenghuang tea and provide science basis for people's safety drinking.
[目的]研究凤凰茶中硝酸盐和亚硝酸盐的含量，为凤凰茶的安全饮用提供科学依据。
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