短语词组短语split -ring seal [机]开口毡封圈split collector ring 分瓣式汇流环split piston ring 拼合活塞涨圈Complimentary Split Resonant Ring 镂空开口谐振环split circular ring 开口圆环Split -ring manostat 开环稳压器split Rolling Ring 分体式滚圈steel split -ring 钢裂环 返回 split ring