双列轴承
the engineer designed a double bearing rudder for the ship.
工程师为这艘船设计了一个双支承舵。
bearings with housings-double bearing with inlay type
带座轴承-无扣环双轴承嵌入型
all of the rods are of one weight class and conform to the double bearing classification, red or blue.
对杆都是一个重量级别,符合双轴承的分类,红色和蓝色。
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