outer cushion ring  外垫圈

ring cushion  垫圈

ring-ring-section  偏心受压构件

base-ring and frame-ring  基础环/座环

collector ring (slip-ring)  集电环

column-ring beam joint with shear ring bars  抗剪环-环梁节点

outside ring in-feed system ring  外环式进给

ring of n×n matrices over ring R  矩阵环

ring out the old year and ring in the new  辞旧迎新

ring upon ring  层层

Riser-ring and Ring Module  浇冒口

short-proof ring (arcing ring)  短路防止环; 引弧环

the Western Ring Road Sector of Central Ring Road  中环线西环段

anal ring hairs anal ring setae  肛门环刚毛; 肛门环刺毛; 肛门环刺

A Lloyd’s policy form of insurance on an air cushion vessel hovercraft  劳氏气垫船运输保险单

a rescue cushion  救生垫

abortive calfskin cushion  胎牛皮靠垫

accumulator gas cushion  蓄压箱气垫

ACV-Air Cushion Vchicle  气垫车辆