求翻译：在轧纹深度一定的情况下，如果节距偏小轧纹后会出现较大的缩径现象，节距偏大则波峰会有平顶现象，只有合理的节距才能消除波峰平顶并且缩径较小而出现近似正弦波状况。是什么意思？

Corrugation depth certain circumstances, if the pitch is too small corrugated appear larger necking phenomenon, the pitch is too large then the crest will be flat-topped phenomenon, the only reasonable pitch to eliminate the crest flat-topped and shrink smaller diameter and appear to approximate a s

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In rolls over in grain depth certain situation, after if pitches slightly rolls over the grain to be able to appear the big reducing phenomenon, pitch then the wave ridge can have the flat topping phenomenon greatly, only then the reasonable pitch can eliminate the wave ridge flat top and the reduci

In depth of Corrugating under certain circumstances, if the pitch is small corrugated larger necking phenomena can occur after, the pitch will have large peaks topping out, only reasonable to eliminate spikes flattened and reduced the pitch appears smaller and approximate a sine wave.

正在翻译，请等待...