CO2 lasers is conducted to cutting die - board with the aim of discussing the relationship between cutting depth and parameters such as laser power, cutting speed and focal position.

采用CO2激光切割模切板，研究激光功率、切割速度、焦点位置等参数和切割深度之间的相互关系，研究如何确定最大切割速度和优化切割速度。

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The refractive index was obtained through measuring the focal position of a capillary filled with the liquid by a reading microscope, and doing a calculation with an analytic formula.

该方法基于共轴球面光学系统的成像原理，通过读数显微镜对吸入待测液体后毛细管的焦点位置进行单一参数的测量，进而计算出待测液体的折射率。

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Bright colors can add vibrancy, energy and interest - however in the wrong position they can also distract viewers of an image away from focal points.

明亮的色彩可以增添活力和兴趣点，然而对象的拙劣安置会分散观者在较低的注意力。

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He is unquestionably their best position player, an elite hitter and Gold Glove fielder, the focal point that manager Joe Girardi builds his lineup around.

WSJ: This Is the Year of Robinson Cano