元凝，字定兴，元融弟。起家恒州征虏录事参军，累迁护军长史。凝姑，尔朱荣妻。庄帝初，封东安王，食邑五百户。除持节、安东将军、兖州刺史，转济州刺史，仍本将军。永熙二年薨，赠持节、都督沧瀛冀三州诸军事、骠骑大将军、冀州刺史。 子彦友，袭。武定中，光禄大夫。齐受禅，爵例降。
本文将“理论分析”和“有限元分析”相结合来研究钢与混凝士组合梁的工作性能。
In this paper, the work behaviors of steel-concrete composite beam are studied by the theory analysis and finite element analysis.
通过缓凝三元复合制成缓凝高效减水剂，延长初凝时间至20 小时以上，并且对混凝土后期强度无副作用。
Mix with setretarder could make compound dispersants setretarder superplasticizer which could extend initial setting time up to 20h and no negative effect on late compressive strength.
采用烧杯混凝实验研究了壳聚糖(CTS)、CTS与丙烯酰胺和丙烯酸乙酯季铵盐三元接枝共聚阳离子絮凝剂(CAS)对高岭土悬浊液的絮凝特性。
Flocculation of kaolin suspensions using ternary polymerization flocculant (CAS) synthesized by chitosan (CTS), acrylamide and ethyl acrylate quaternary ammonium salt was investigated in lab-scale.
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