The contraction of facial muscles both influences the internal emotional state and reflects it.
面部肌肉的收缩既能影响人的内心情绪，又能将它反映出来。
2
We mainly apply the contraction principle in analysis and properties of some Spaces. By the computable functions constructed, we extend the solution from the internal to the entire space.
Sensitivity coefficient obtained from calculation can represent how much the internal temperature variation and contraction affects the early crack of concrete structure.