收缩

• Normally the heart movements can be felt as distinct systolic and diastolic thumps .
  正常时，能够感觉到心脏的运动是性质截然不同的收缩和舒张的撞击。
• Erosive action is achieved at each contraction where a pair of opposing vanes are installed .
  在每个收缩区段中相对地设置一对叶片，都起到了冲洗作用。
• The core again contracts, and the star's evolution proceeds inexorably to the final state .
  恒星核心必将再度收缩，恒星不可抗拒地要演化到最后的状态。
• Unless some new laws of physics intervene, the matter will shrink down to a singular point .
  除非有某些新的物理定律起作用，否则物质将一直收缩到奇点。
• the sudden change in ψ caused by a measurement is called the reduction of the wave function.
  由测量引起的的突变叫做波函数的收缩。
• Freyssinet flat jacks may be required to compensate for distortions arising from creep and shrinkage .
  弗涅新奈氏扁千斤顶可用以调整收缩与徐变产生的变形。
• It is well established that the cardiac contraction is initiated when an action potential depolarizes the sarcolemma .
  已经确证，心肌收缩始于动作电位使肌膜去极化。
• "my means of ascension and descension consist only in dilating or compressing the gas inclosed in the balloon. "
  “我使气球升降的方法，是使气球里的气体膨胀和收缩。
• To conserve blood that will be needed by muscles, skin vessels constrict while vessels of the muscles dilate .
  为了保存肌肉所需要的血液，皮肤血管收缩，而肌肉血管舒张。