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1·The roller of these bearings are of spherical shape, and the spherical raceway surface of the housing washer is selfaligned.

该类轴承滚子为球面型，由于座圈滚道面呈球面，具有调心性能。

2·A heater-mounting structure of a dish washer includes a sump housing for storing a washing water inside, and a heater disposed inside the sump housing.

一种洗碗机的加热器安装结构，包括一个用于在其内储存洗涤水的水箱外壳和一个设置在水箱外壳内部的加热器。

3·Backing of washer contact housing.

垫圈的钢背与轴承座相接触。