Studying CR-39 under a microscope and counting the number of tracks is a standard way to assess how many neutrons bowled past.

在显微镜下研究CR - 39，计算痕迹数量，是测算穿过中子数量的标准方法。

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Objective: To investigate the effect of firing number on the color of Au-Pt alloy porcelain and Ni-Cr alloy porcelain.

目的：探讨烧结次数对金铂合金烤瓷及镍铬合金烤瓷颜色的影响。

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Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.

铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。

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Mahaffy et al., case number 1:05-cr-00613, in the U.S. District Court for the Eastern District of New York.

FORBES: 'Squawk Box' Defendants Denied Bid For New Trial