• 它的深入研究口径球面精抛光阶段提供一种有效可靠定量检测手段

    The further research may provide an effective and reliable quantitative testing method for the exact-grinding and initial polishing of aspheric surfaces.

    youdao

  • 吾之寂寞犹不及风向标、北极星、南风四月阵雨正月融雪、之流。

    I am no more lonely than the Mill Brook, or a weathercock, or the North Star, or the south wind, or an April shower, or a January thaw, or the first spider in a new house.

    youdao

  • 吾之寂寞犹不及风向标、北极星、南风四月阵雨正月融雪、之流。

    I am no more lonely than the Mill Brook, or a weathercock, or the North Star, or the south wind, or an April shower, or a January thaw, or the first spider in a new house.

    youdao

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