中心轴；[机]中心销
Style X body design has special geometry and plate configuration to allow each plate to strike the stop pin in its center of percussion.───类型阀体结构具有特殊的几何结构和阀瓣配置，使得每个阀瓣撞击在其撞击中心的止动销上。
The store also acts as a community center: Every so often, its second floor hosts workshops on making artisanal hand cream or shooting pin-hole photography or playing guitar.───的店铺还扮演着社区活动中心的角色：店铺的二楼常常都有讲习班，讲习内容则是自制护手霜、拍摄针孔照片或是演奏吉它的技巧。
Pump wear parts are mainly drive shaft and bushing, passive gear center hole and shaft pin, pump shell lumen and gear, gear face and pump cover, etc.───齿轮泵的磨损部位主要有主动轴与衬套、被动齿轮中心孔与轴销、泵壳内腔与齿轮、齿轮端面与泵盖等。
Defect on the cage caused by punches, which do not move freely on the center pin; cause a deformed bottom or side of cage.───由于冲头不能在中心销上自由地运动，造成保持架底部或者边侧的变形缺陷。
Create circles for the pivot and center pin───创建作为枢轴的中心圆圈
center pins───中心轴；[机]中心销
center bit───中心钻头
cotter pin───开口销
center punch───中心冲；冲子；定准器
center bits───中心位
cotters pin───开口销
scatter pin───散点针
centering───n.置于中心位置；拱鹰架（等于centring）
centerline───n.中心线