重复采样的品牌（n＝5）通过魏克森讯号等级检定进行比较。
Repeatedly sampled brands (n=15) were compared via Wilcoxon signed rank tests.
等级的样品任何重复供应一次被提供给GSWUHAN。
Any repeat supply of the Samples of a grade once supplied to GSWUHAN.
油缸同步采用电液伺服系统控制，配合国际水准的光栅尺。形成全闭环控制。同步控制精度极高。折弯精度、重复定位精度等也达到很高的等级。
The electric-hydraulic servo system can control the synchronization of two cylinders. Combined with high synchronization cont rolaccuracy, and higy bending and repetitive positioning accuracy.
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