collimators

简明释义

英[/kəˈlɪməteɹz/]美[/kəˈlɪməˌtɚz/]

n. [光]准直仪；描准仪（collimator 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Focusing collimators were used instead of single collimator to increase the scattering photon flux received by detector.

提出利用聚焦准直器代替单个准直器以达到增大探测器接收到的散射光子通量的目的。

2.Focusing collimators were used instead of single collimator to increase the scattering photon flux received by detector.

提出利用聚焦准直器代替单个准直器以达到增大探测器接收到的散射光子通量的目的。

3.This is typically achieved using fixed, circular collimators that produce sharp-edged, highly conformal treatment beams.

实现这种效果具代表性地是采用固定、圆形的准直器，它能够产生边缘锐利、高适形的治疗射束。

4.Smaller collimators are particularly good at generating steep dose gradients and conforming dose to the target.

尺寸越小的准直器特别有助于针对病灶产生有陡峭剂量梯度和适形的照射剂量。

5.The FBG optical switch (OSW), which composes by FBG collimators, is the integration package of FBG and OSW.

由光纤光栅准直器组成的光纤光栅光开关真正实现了光纤光栅与光开关二合为一的结构。

6.And a monitor backscatter factor is used to correct the effect of backscatter from secondary collimators.

并用一个反向散射修正因子对次级准直器的反向散射进行修正。

7.The modulator consists of a pair of electro-optic crystals, one polarizer and a pair of collimators.

整个装置由一对电光晶体、一个起偏器和一对准直系统组成。

8.There are tens of combinations between the collimators and the filters.

多达几十种的准直器和滤光片的自由组合。

9.The physicist explained how the collimators 准直器 are used to narrow the beam of particles in the accelerator.

物理学家解释了如何使用collimators 准直器 来缩小加速器中的粒子束。

10.In medical imaging, collimators 准直器 help improve the quality of the images by reducing scatter.

在医学成像中，collimators 准直器 通过减少散射来提高图像质量。

11.The design of the collimators 准直器 is crucial for ensuring accurate measurements in experiments.

collimators 准直器 的设计对于确保实验中的准确测量至关重要。

12.We need to calibrate the collimators 准直器 before conducting the next round of tests.

在进行下一轮测试之前，我们需要校准collimators 准直器。

13.The collimators 准直器 in the telescope help focus light onto the sensor.

望远镜中的collimators 准直器 帮助将光聚焦到传感器上。

作文

In the world of optics and imaging, precision is paramount. One of the key components that help achieve this precision is the use of collimators. These devices are essential in various applications, ranging from telescopes to medical imaging systems. Understanding how collimators work can provide valuable insights into their importance in scientific and industrial fields. A collimator is an optical device that narrows a beam of particles or waves. It is designed to produce a parallel beam of light or other radiation, ensuring that the emitted rays travel in a straight line. This is crucial in many contexts, as any divergence in the beam can lead to inaccuracies in measurements or images. For instance, in astronomical observations, collimators help astronomers focus on distant celestial objects without the interference of atmospheric disturbances. In medical applications, collimators play a significant role in imaging techniques such as positron emission tomography (PET) and single-photon emission computed tomography (SPECT). These imaging methods rely on the detection of gamma rays emitted by radiopharmaceuticals within the body. The collimators used in these systems ensure that only the gamma rays traveling in specific directions are detected, enhancing image quality and diagnostic accuracy. By filtering out unwanted radiation, collimators allow healthcare professionals to obtain clearer and more precise images, which are critical for accurate diagnosis and treatment planning. Moreover, collimators are also utilized in particle physics experiments. In high-energy physics, where particles are accelerated to nearly the speed of light, controlling the direction and focus of particle beams is essential. Collimators help scientists direct these beams with high precision, allowing for more effective collisions and interactions between particles. This is vital for exploring fundamental questions about the universe and the nature of matter. The design of collimators can vary significantly depending on their intended use. Some may consist of simple apertures that allow only certain angles of light to pass through, while others may employ complex arrangements of lenses and mirrors. The choice of materials and geometries is influenced by factors such as the wavelength of the radiation being collimated and the required degree of precision. In conclusion, collimators are indispensable tools in the field of optics, serving a wide range of applications across different scientific disciplines. Their ability to produce parallel beams of light or radiation enhances the accuracy and reliability of measurements and images. Whether in astronomy, medical imaging, or particle physics, the role of collimators cannot be overstated. As technology continues to advance, the development of more sophisticated collimators will likely lead to even greater improvements in the precision of optical systems, furthering our understanding of the world around us.

在光学和成像的世界中，精确性至关重要。实现这种精确性的一项关键组件是使用准直器。这些设备在从望远镜到医学成像系统等各种应用中都是必不可少的。理解准直器的工作原理可以为我们提供有关其在科学和工业领域重要性的宝贵见解。 准直器是一种光学设备，用于缩小粒子或波束。它旨在产生平行的光束或其他辐射，确保发射的光线沿直线传播。这在许多情况下至关重要，因为光束的任何发散都可能导致测量或图像的不准确。例如，在天文观察中，准直器帮助天文学家专注于遥远的天体，而不受大气干扰的影响。 在医学应用中，准直器在正电子发射断层扫描（PET）和单光子发射计算机断层扫描（SPECT）等成像技术中发挥着重要作用。这些成像方法依赖于探测体内放射性药物发出的伽马射线。用于这些系统的准直器确保只有朝特定方向传播的伽马射线被检测到，从而提高图像质量和诊断准确性。通过过滤掉不需要的辐射，准直器使医疗专业人员能够获得更清晰、更精确的图像，这对准确的诊断和治疗计划至关重要。 此外，准直器还用于粒子物理实验。在高能物理学中，粒子被加速到接近光速，控制粒子束的方向和聚焦至关重要。准直器帮助科学家高精度地引导这些束流，从而允许更有效的粒子碰撞和相互作用。这对于探索关于宇宙和物质本质的基本问题至关重要。 准直器的设计可能因其预期用途而有很大不同。有些可能由简单的孔径组成，仅允许特定角度的光通过，而其他则可能采用复杂的透镜和镜子排列。材料和几何形状的选择受到诸如被准直的辐射波长和所需精度程度等因素的影响。 总之，准直器是光学领域不可或缺的工具，在不同科学学科的广泛应用中发挥着作用。它们产生平行光束或辐射的能力提高了测量和图像的准确性和可靠性。无论是在天文学、医学成像还是粒子物理学中，准直器的作用都不容小觑。随着技术的不断进步，更复杂的准直器的发展可能会进一步提高光学系统的精度，推动我们对周围世界的理解。