模数和压力角相同而齿数不同的齿轮用同一把（ ）加工时，制造误差最大。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id < 2124458 and id<>'2124458' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id > 2124458 and id<>'2124458' order by id asc limit 5