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double refraction 双折射

  • The column USES the double expansion and contraction function hydraulic cylinder, increases the power stroke to satisfy the support to adjust the high scope the need.

    立柱采用伸缩作用液压以增加工作行程满足支架范围需要

    www.cncad.net

  • In the plane layout of double dikes, the sudden expansion or contraction should be avoided. The elevation of the top of the dike should be identical with middle tide level.

    平面布置不宜呈突然扩大收缩状,堤顶高程潮位一致

    dict.cnki.net

  • To economists, a double-dip has a narrow meaning: a period when the economy comes out of recession only to suffer another contraction.

    对于经济学家来说,“二次底”定义是很严格二次探底是指经济衰退复苏,萎缩时期

    blog.sina.com.cn

  • To economists, a double-dip has a narrow meaning: a period when the economy comes out of recession only to suffer another contraction.

    对于经济学家来说,“二次底”定义是很严格二次探底是指经济衰退复苏,萎缩时期

    blog.sina.com.cn

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