光斑

The results indicate that multiple reflections are favorable to the increase of depth. When the focal position is above the surface, the absorptive intensity on the front decreases, so the cutting depth decreases. When the focal position is below the surface, the position on the front with the maximum power intensity is downward. The intensity distribution is toward the deeper position, the cutting depth increases. But if the negative focal distance is extremely big, the intensity of the deeper position attenuates sharply with the increase of focal radius and light distances, so the depth deceases.

正离焦切割时，前沿吸收的总激光功率密度减小，切割深度减小；负离焦切割时，最大激光功率密度值的位置下移，使得前沿功率密度分布朝着深部推进，切割深度增加，若负离焦量过大，表面光斑直径和光程增加，更深位置的功率密度减小，切割深度减小；随着激光功率增加、切割速度减小，则前沿弯曲程度减小，被激光直接照射的前沿部位增长，前沿吸收激光功率密度增加，切割深度增加。

Three components of a force vector applied to the columnar feeler are identified from contact areas of four conical feele...

施加到圆柱触头上的力的三个分量可以通过该圆柱触头所对应的2×2 个圆锥触头与光波导板接触时溢出的光斑面积确定。

Arctic sunlight dapples a pod of Atlantic walruses swimming in Canada's Foxe Basin. Walruses are clumsy on land but swim with fluent grace.

北极的阳光在一群游弋在加拿大福克斯湾的大西洋海象身上投下点点光斑。

A U like shape on the curve of fundamental mode waist in the active medium versus pump power, at different cavity lengths of the laser diode end pumped Nd:YVO 4 solid state lasers with a flat flat resonator structure, is analyzed by means of the transform circle approach.

运用谐振腔变换圆理论，详细分析了激光二极管抽运的Nd ：YVO4 平行平面腔固体激光器振荡光在晶体内的基模光斑半径随抽运功率变化的U形曲线。

The energy distribution of the focused laser spot has Gaussian profile, and if the exposure dose threshold of the photoresist is less than and far away from the peak of that Gaussian curve, the linewidth will be less affected by the variation of exposure dose or exposure dose threshold, and so, will improve the linewidth stability.

准直光束经物镜会聚后光斑的能量呈近似高斯分布，当胶层的曝光量阈值远离高斯型曝光量曲线的头部时，可以弱化线宽对实际曝光量或胶层曝光量阈值等变化的敏感度，从而提高线宽的稳定度。

Close inspection of the bulge in the above photograph shows many points of light that are actually globular clusters.

仔细观看上面影像中的银核，可以发现许多的光斑实际上是球状星团。

The general lighting of the Glow-worm thus comprises two groups: first, the wide belts of the two segments preceding the last; secondly, the two spots of the final segments.

通常而言，前两节的光带先发光，而处于最后一节的两点光斑则紧接其后。

In chapter 4, the influence of the wave-front curvature of Raman pulses on the measurement precision of gravitational acceleration in atom interferometers is analyzed with the method of a transmission matrix. It is shown that the measurement precision of gravitational acceleration is highly dependent on the spot size of the Raman pulse, the temporal interval between Raman pulses and the optical path difference of the two counter-propagating Raman pulses.

第四章运用高斯光束传输矩阵的方法计算了原子干涉仪实验中拉曼光束波前弯曲对重力加速度测量精度的影响，得出了精度与拉曼光束光斑大小，拉曼脉冲作用的间隔时间，以及拉曼光束光程差之间的关系。

This gentle giant has grayish- blue skin with light spots.

这个温和的巨人有灰蓝色的皮肤与光斑。

The thermal effects, produced by the high energy laser in a beam control system, are numerically analyzed in this paper.

采用数值计算方法分析了较高能量密度激光在光束控制系统内所产生的热效应对远场光斑质量和能量分布的影响。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失