题目内容：
斜齿圆柱齿轮的齿数z与模数mn不变，若增大螺旋角β，则分度圆直径d1（ ）A.增大
B.减小
C.不变
D.不一定增大或减小
参考答案：
选择题：斜齿圆柱齿轮的齿数z与模数mn不变，若增大螺旋角β，则分度圆直径d1（ ）
- 题目分类：华北水利水电大学-机械设计基础
- 题目类型：选择题
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A.增大
B.减小
C.不变
D.不一定增大或减小
A.增大
B.减小
C.不变
D.不一定增大或减小
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