这些非无接触式密封件不限制轴承转速。
英勇非无泪，不洒敌人前。男儿七尺躯，愿为祖国捐。
Brave and no tears, not sprinkle the enemy before. A man seven feet, is willing to donate the motherland.
英雄非无泪，不洒敌人前。男儿七尺躯，愿为祖国捐。
The hero is not without tears, not before the enemy. A man seven feet, is willing to donate the motherland.
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