shrinkagen.收缩；减少；损失；损耗shrinkage cracking收缩裂缝shrinkage porosity缩松,松心,收缩疏松,收缩孔隙度shrinkage crimping收缩卷曲shrinkage porocity缩松缩孔shrinkage and sink缩孔和缩陷shrinkage pressure收缩压强Shrinkage concrete收缩混凝土shrinkage fracture收缩裂缝shrinkage estimator收缩估算量shrinkage character收缩特性