Controling conditions of production process to obtain developed isometric dendrite structure is one of the important measures to increase the strength property of gray iron.
控制生产工艺条件，获得发达等轴枝晶组织，是提高灰铸铁强度性能的重要技术措施之一。
A viscoelastic rheological model was proposed to simulate the relaxation process of isometric knee extension.
本文用一个粘弹性流变学模型来模拟股四头肌作等长收缩时的松驰过程。
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