It was considered as abnormal if no wave form was found.
几次测量均不出波形也属异常。
When stars' ellipses rotate at widely different speeds, the galaxy has no wave structure.
当恒星画出的椭圆彼此间绕转速率差异甚大时，星系不会出现波动结构。
Profile (flatness) : after the establishment of coiling tension, there shall be no wave in the F4 mill stand exit in visual.
板形(平直度)：在卷取张力建立后，F4机架出口带材目测无波浪。
Profile (flatness) : after the establishment of coiling tension, there shall be no wave in the F4 mill stand exit in visual.
板形(平直度)：在卷取张力建立后，F4机架出口带材目测无波浪。
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