ballvalve(sphericalvalve,globevalve)词语:ballvalve(sphericalvalve,globevalve)解释:球阀(转动阀,球阀)词典:专利专业英汉词典ballvalve(sphericalvalve,globevalve)相关解释球阀(转动阀,球阀)ballvalve(sphericalvalve,glo......