self aligning ball bearing
熔执,扎缚,刮痕 seizing 自动对准滚珠轴承 self aligning ball bearing 自给式压缩空气操作呼吸器 self-contain compressed air-operated breathing apparatus ..
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气动伺服副翼由整体坯料加工而成，设计在转臂上有自动对准滚珠轴承。
The design of the aero servo aileron hinges are machined from solid billet and have a self aligning ball bearing pressed into the arm.
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