Contractions收缩contractionn.收缩；痉挛；缩写式contraction-joint grouting收缩缝灌浆contraction mapping principle压缩映射原理contraction of retinal artery视网膜动脉收缩contraction of the slipstream滑流收缩contraction folds of Schwalbe施瓦耳贝(氏)收缩(皱)襞, 施瓦耳贝(氏)收缩沟contraction of solidification凝固收缩contraction energy dissipator收缩式消能工contraction-expansion factor伸缩因子contraction of the slip stream滑流收缩contraction due to desiccation干燥收缩