It has been pointed out that the oilless plastic bearing is a product with a great developing prospect and applying value and ought to research and develop rapidly.

 
  • 表明了無(wú)油潤滑塑料軸承是一種很有發(fā)展前途和應用價(jià)值的產(chǎn)品,應加快研究與開(kāi)發(fā)。
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