【钩舌】参见人事部·禀性“常山骂羯奴”。宋文天祥《平原》：“哀哉常山惨钩舌，心归朝廷气不慑。”
介绍日本在提高滑动轴承和钩舌寿命方面的研究成果及车轮热裂的无损检测。
Introduced are the research achievements in improving the service lives of sliding bearing and coupler knuckle, as well as the non destructive inspection for hot cracking in Japan.
分析了钩舌磨耗剩余厚度和钩舌外胀的检测方法，并介绍了检测样板的设计。
The inspection measures for the residual thickness of the worn knuckle and the expansion outside of the knuckle are analyzed. And the design of the inspection template is described.
对重载列车E级钢钩舌进行了应力分析，导出了钩腕面裂纹的应力强度因子表达式。
The stress of E-grade steel coupler knuckle was analyzed and the expression of stress intensity factor of the cracks on the coupler knuckle wrist area was given.
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