The forming and maintaining of K-H instability was an important reason of causing vortex on the shear line maintain, strengthen, and causing rainstorm.
不稳定的形成和维持，是导致中尺度切变线上小尺度涡旋维持、加强，并产生强风暴雨的重要原因。
A description has been made on a structure and principle of progressive die used on a general press for shear, upsetting and automatic feed used for forming small axial parts.
介绍了用在通用压力机上成形小型轴类零件的一种新型切断、冷镦自动送料连续模的结构形式、工作原理和设计要点。
While shielding set of processing technology mainly divided into next makings shear, rolled plate forming, welding, straightening round, test and assembly several processes.
而屏蔽套的加工工艺次要分为下料剪切、卷板成形、焊接、矫圆、试验和组装几个工序。
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