提出了两级驱动式结构，即通过粗动与微动相结合的驱动方式实现纳米级精度。
The structure is designed in two-grade actuating style, driven by combination of coarse driving and fine driving to achieve nanometer resolution.
加入黄油，用食物加工器或者是你的手指搓动它们，直到那混合物看起来像是粗面包屑。
Add the butter and using a food processor, or the tips of your fingers, rub together until the mixture resembles rough breadcrumbs.
推广并改进动筛跳汰使之在粗、重选中获得应用；钨细泥工艺的改进提高了钨细泥的回收率。
Improved jig sizing applied in roughing and gravity dressing, and improved tungsten fine deposit recovering technology enhance the recovery of tungsten fine deposit.
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