面收缩 meaning in Chinese

necking

Abstract : based on equivalent liquid surface descending method ( elsdm ) and isolated melting zone method , a multi - hot - spot and simultaneous shrinkage - feeding method was established to predict the shrinkage cavities of steel casting during solidification simulation . the shrinkage in each hot spot can be simulated and fed dynamically and simultaneously by itself using this method . then two practical steel castings were analyzed by this method
文摘:本文在等效液面收缩法和孤立域法基础上建立了预测铸钢件缩孔的新方法? ?多热节和即缩即补方法，该法实现了对模拟铸件各热节的内部动态瞬时补缩，并采用该方法对两个实际铸钢件进行了缩孔分析。
Through the experiment of the interfacial bonding shear strength and the shrinkage strain of concrete , the influence of the interfacial roughness of used concrete surface and interfacial bonding agent to interfacial bonding strength is revealed ; new concrete component and the shape and size of concrete slab are main factor affecting the shearing stress in layers
试验结果表明：老混凝土粘结面的粗糙度和界面粘结剂类型对新老混凝土界面粘结强度影响很大；新铺混凝土材料和混凝土路面板形状尺寸是影响新老混凝土粘结面收缩剪应力的主要因素。