Moreover this gradual contraction inlet may translate some pressure energy of liquid into kinetic energy and increase circumrotate speed. These play active actions on improving separation efficiency.
A large number of ice wedges have been found active in the environment that convertionally would be regarded as too warm for thermal contraction cracking and ice wedge development.
在过去认为不会有冰楔活动的地区，发现了新生的和正在活动的冰楔。
3
As we facial muscle contraction and an over-active form of expression annoying wrinkles.