contractionn.收缩;痉挛;缩写式
contraction ring子宫收缩环
contraction gage收缩尺, 缩规
contraction band伸缩带
contraction twin压缩孪晶
contraction rate收缩率
contraction type冷缩式
contraction loss截面收缩损失
contraction work收缩功
contraction heat收缩热
contraction wave[医] 收缩波