The flow volume per stroke of each chamber is determined by the lateral stroke of the entire piston assembly and also by the annular areas of the proximal and distal ends of the piston.
各腔室在一个行程下的流体积由整个活塞组件的侧向行程和活塞的近端和远端的环形区域决定。
The piston portion (102) further includes a substantially annular insert chamber (126) formed in the mating face (105) and adapted for receiving a portion of a substantially annular insert (120).
该活塞部分（102）还包括形成于该配合面（105）中且适 于接纳基本上环形的嵌件（120）的一部分的基本上环形的嵌件腔室 （126）。
The piston of the utility model adopts an annular structure; accordingly, a cylinder adopts annular structure too, both the piston and the cylinder are all arranged in the bicycle hub.
该装置的活塞采用环形结构，缸体与之相应地也采用环形结构，活塞及缸体均安装在自行车轴皮内。
The piston of the utility model adopts an annular structure; accordingly, a cylinder adopts annular structure too, both the piston and the cylinder are all arranged in the bicycle hub.
该装置的活塞采用环形结构，缸体与之相应地也采用环形结构，活塞及缸体均安装在自行车轴皮内。
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