... Pitch tolerance齿距公差 Pitch trace节线 Pitch variation齿距变化量 ...
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Pitch h trace 节线
·2,447,543篇论文数据，部分数据来源于NoteExpress
While Di Canio faces scrutiny off the pitch, on it his new team are sinking without a trace.
CNN: Paolo Di Canio faces scrutiny over 'Fascist' views
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