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- focussed spot diameter 焦斑直径
- focused spot diameter 焦斑直径
- This paper is concerned with the laser ignition performance of energetic material affected by the light spot diameter using photoelectric method. 摘要用光电探测法研究了激光光斑直径对含能材料激光点火特性的影响。
- Aiming at the motorcycle cylinder moving characteristics,the influence of the technological parameter,spot diameter and hardenability in the laser surface treatment. 针对摩托车汽缸的运动特点，分析了激光处理工艺参数、光斑直径和硬化带面积、光束运动模式、硬式匹配等因素对激光处理的影响。
- The effect of the irradiation time,laser intensity and spot diameter on the mass ablative rate of carbon fiber reinforced silicone modified epoxy resin composite was analyzed respectively. 分别分析了入射激光的辐照时间、强度和光斑直径对碳纤维增强有机硅改性环氧树脂复合材料质量烧蚀率的影响规律。
- A prism beam-splitting system used in hologrphic maker is presented. It has the advantage of compact structure, good reliability, high resolution and small spot diameter(< 0. 1 mm). 提出一种可用于像素全息机的棱镜分光系统，该系统结构小巧，稳定性良好，分辨率高，所形成的光斑尺寸小于0.;1mm；
- Bending angle about material augments along with laser power and laser light spot diameter augment, but bending angle about material minishes along with laser scan rate and material hardness augment. 随着激光功率和激光光斑直径的增加板材弯曲角度增大,但随着激光扫描速度和板材厚度的增加弯曲角度减小。
- In order to obtain the laser beam with better beam quality, less spot diameter and higher power density in laser manufacturing (LM), Gaussian beam used in LM was transmitted and transformed. 摘要为了获得光束质量较好、光斑尺寸较小、功率密度较高的、适合激光加工的激光束，对激光加工中的高斯光束进行传输与变换。
- It is shown that the threshold ratio of the laser power to the beam spot diameter P/d for penetration welding is consistent with different beam spots. 结果表明,以激光功率与光斑直径之比作为深熔焊接阈值的表征参量,深熔焊接阈值与光斑大小无关;
- Effect of preheat, smaller focus spot and welding processing parameter on sensitivity to cracking is studied. 分析了激光焊接时为克服焊接裂纹所采取的焊前预热、短焦距焊接及焊接工艺参数等因素对裂纹敏感性的影响。
- Spot diameters of just a few thousands of an inch can readily be attained with convenient short focal length lenses. 用普通的短焦距透镜不难得到直径只有几十微米的光点。
- The diffractive optical elements (DOE) with shaping the focused spot for laser writing system are designed, while discussing their performances for shaping laser writing spot. 摘要针对激光直写光刻系统设计整形衍射光学元件(DOE)，对写人焦斑的整形进行了研究。
- The focusing intensity decreases gradually with the increasing of the astigmatic coefficients.The azimuth angle of focusing spot is determined merely by astigmatic coefficients. 聚焦光强随着透镜像散系数的增大而逐渐减弱，聚焦光斑的方位仅由像散系数确定；
- The diffractive optical elements (DOE) with shaping the focused spot for laser writing system are designed , while discussing their performances for shaping laser writing spot. 针对激光直写光刻系统设计整形衍射光学元件（DOE），对写入焦斑的整形进行了研究。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- I'm afraid we are in for a spot of trouble. 恐怕我们是一定要遇到麻烦了。
- He is hit by a falling tree and killed on the spot. 一棵树倒下来，把他当场砸死了。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- I've always had a real soft spot for him. 我一向对他挺有好感。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
