Discussed initially the mechanism of polycarboxylic water-reducer improve performance of cracking-resistance of concrete.
初步探讨了聚羧酸减水剂提高混凝土抗劈裂性能机理。
Stay green is a drought resistance mechanism in sorghum. Genotypes with stay green give resistance to premature senescence and grain filling normally during the postflowering water stress.
持绿是高粱的一种抗旱机制,具持绿性状的基因型,在开花后遇水分胁迫时抗旱抗植株过早衰老,籽粒正常灌浆。
The aging mechanism and aging behavior of polyacetal in boiling water and the methods to improve its resistance to toiling water were discussed.
讨论了聚甲醛的沸水老化机理、沸水老化行为及改善聚甲醛耐沸水性的方法。
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