Crova's disc 克罗瓦盘文献(pubmed) 赞助商链接以下为句子列表:英文: To reverse the seat disc, unscrew the disc screw and disassemble the disc washer and disc rubber from the disc holder assembly.中文: 为了翻转阀座阀瓣,则要拧松阀瓣螺丝,从阀瓣固定器总成拆解阀瓣垫圈和阀瓣橡胶。