contraction

收缩，紧缩；缩写式；害病英释中释na very strong and painful movement of a muscle, especially the muscles around the womb during birth

1 muscle contraction,肌肉收缩；肌收缩

2 economic contraction,经济萎缩

3 contraction ratio,收缩比；收缩系数

4 uterine contraction,子宫收缩

5 thermal contraction,热收缩

6 contraction stress,收缩应力

7 volume contraction,体积收缩；容积收缩；音量压缩

8 contraction joint,收缩接缝；收缩节理

1 the contraction of metal as it cools.金属冷却时的收缩