皮皮学，免费搜题
登录
搜题
【多选题】
零件加工步长指控制刀具前进方向上相邻两个之间的直线距离,曲面加工中,步长对加工质量的影响较大,下列说法正确的是( )。A.
步长越大,加工零件表面越光滑
B.
精加工步长必须根据工件表面轮廓度和表面粗糙度要求设定
C.
步长是一个不变的数值
D.
步长的大小会影响加工效率
E.
都是很短步长的程序,加工效果受数控系统性能影响
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】土壤凋萎系数(名词解释)
【简答题】凋萎系数：（名词解释）
【单选题】The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. What is the width of each class?
A.
1 minute
B.
5 minutes
C.
2%
D.
100%
【简答题】凋萎系数(或凋萎点)(名词解释)
【简答题】He has expressed a/an__________ to see you.
【单选题】The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. Time (in Minutes) Relative Freq...
A.
1 minute
B.
5 minutes
C.
2%
D.
100%
相关题目：