汽车英语里blank cover是什么？washer damper又是什么？

blank cover 塞，盖，堵片，堵盖
washer damper 止推垫圈，防滑垫圈

Three Yuan catalyzed installments overhaul; Topic one; The student carries on the integrated module teaching; Wing beat air-flow meter; Hot line type air-flow meter; Hot film type air-flow meter; Engine examination method; Grasps the electrically controlled unit the structure, the principle; Understands the electrically,trolled unit examination method; Electrically controlled unit; Switch type damper; Linear type damper; Comprehensive damper
louver damper 摆阀式活塞泵 swing gate piston pump 保温式 Steam jacket type 报警阀 alarm valve... 挡板 damper 导阀http://380295170@qzone.com

blank cover 封口盖板
washer damper 垫片减震器

出纛甗龃鹳龈巍献龅龆鲡髓飍鳔颅龇劙鬣郦鹂颧观蠃囊蛊赢翻羸嬴蠹

空白的盖子 洗衣机制音器

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晕