4. The fixed knife device for a grass cutter solves the problems of easy jumpiness and deformation of the existing fixed knife device for a grass cutter.
该割草机定刀装置解决了目前的割草机定刀容易跳动和变形的问题。
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5. A suit of the automatic checkout equipment used for the axle parts is designed. The equipment can check automatically the diameter, circle degree and circle jumpiness.
设计了一套轴类零件的自动检测装置，该装置能检测轴类零件的直径、圆度和圆跳动。
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6. The invention of the valve girdle jumpiness detection utensil for the engine cylinder cap belongs to the technology area of the detection utensil in process of the automobile production.
本发明发动机气缸盖气门环带跳动检具，属于汽车生产过程中检测器具的技术领域。
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7. Introducing a kind of dynamic capability study method which tested jumpiness of the sawblade made in Germany on the precision sizing saw machine, as well as vibration of principal rotation axle.
介绍一种用动态性能试验法测试空载时在精密推台锯上的德国产锯片锯齿径向跳动值，以及旋转主轴振动情况。
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8. Introducing a kind of dynamic capability study method which tested jumpiness of the sawblade made in Germany on the precision sizing saw machine, as well as vibration of principal rotation axle.
