"Autogenous shrinkage" 是指材料在自身温度下降的过程中发生的尺寸收缩。它通常发生在材料固化或热处理过程中，因为材料内部的水分、气体和其他挥发性物质会蒸发，导致材料体积减小。
以下是一篇关于autogenous shrinkage的英文范文：
Autogenous Shrinkage in Plastic Sculpture
Plastic sculpture is a form of art that requires precise manipulation of materials to create three-dimensional forms. One of the challenges faced by sculptors is the phenomenon of autogenous shrinkage, which refers to the tendency of materials to shrink in size as a result of their own heat loss or cooling.
When a plastic material is heated to its softening point, it becomes malleable and can be shaped into various forms. However, as the material cools and solidifies, it undergoes a process of shrinkage. This shrinkage can result in the creation of voids and other imperfections in the finished piece, which can affect its appearance and integrity.
Sculptors must be aware of the phenomenon of autogenous shrinkage and take measures to minimize its impact on their work. They can do this by carefully controlling the heating and cooling processes, using materials with low shrinkage rates, or incorporating supports and other strategies to counteract the effect of shrinkage.
In conclusion, autogenous shrinkage is a common phenomenon in plastic sculpture that can have a significant impact on the finished piece. Sculptors must be aware of this phenomenon and take appropriate measures to minimize its effects on their work.
autogenous shrinkage是指自干性收缩，属于混凝土养护后体积减少的现象。在英文范文中，它常常被用于描述混凝土等材料在自然干燥或硬化过程中，由于内部应力或结构变化而发生的尺寸变化。
“autogenous shrinkage”在英文中翻译为“自收缩”。
然而，关于autogenous shrinkage的最新变化，我需要更多的上下文信息才能提供准确的答案。这个概念在不同的语境下可能会有不同的含义和应用。