The shelf life of pre-treated materials ranges from hours to years, depending on the plastic, its formulation, how it was treated and its exposure to elevated temperature after treatment.
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Its formulation development and the platform test as well as the road test are presented.
介绍了多级四代油的配方研制、发动机台架评定及行车试验结果。
OBJECTIVE To study the stability of Chloramphenicol eye drop and improve its formulation and preparation.
目的研究氯霉素滴眼液的稳定性,改进其处方工艺。
The author introduces the dual-value standard for water quality control, its formulation, development and revision in the U.
主要介绍了有关美国水污染防治的双值水质基准的一些内容。
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