The heart , which is a muscular pump , beats about 72 times a minute through a continuous and automatic process of muscular contraction and relaxation .
心脏是一个肌肉构成的泵。它通过心肌的收缩和舒张这一连续不断的自动过程每分钟大约搏动72次。
2
Objective To study the biting process from muscular position (MP) to intercus-pal position(ICP)dynamically in the normal occlusion subjects.
目的动态分析正常牙合者从肌位(MP)到牙尖交错位(ICP) 咬合的变化过程。
3
The heart, which is a muscular pump, beats about 72 times a minute through a continuous and automatic process of muscular contraction and relaxation.