滑囊起缓冲作用，以保证两个结构的通畅滑动。
The bursae act as cushioning to allow smooth gliding between these structures.
弹性保护圈逐起缓冲作用。避免了脆性搪瓷的剥离。
The elastic protective ring has buffer action when the enamelware accidentally falls or crashes, so fragile enamel is prevented from stripping.
阻尼器主要用于起缓冲作用，它的最大特点是气弹簧的力随着运动速度的变化而变化。
Dampers are mainly used as a buffer role, it's biggest feature is the spring force as the gas velocity and change.
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