Neutral hydrogen emits radiation on a characteristic 21cm wavelength, while ionised hydrogen does not.
中性氢辐射出离子化氢所没有的特有的21厘米波长。
Neutralhydrogen emits radiation on a characteristic 21cm wavelength, while ionisedhydrogen does not.
中性氢辐射出离子化氢所没有的特有的21厘米波长。
The telescopes sift through the background cosmic radiation to find spots where it has been slightly perturbed as it passes through extremely hot gas, a hallmark characteristic of galaxy clusters.
南极天文台三大观测宇宙的天文台之一，旨在检测由宇宙大爆炸而产生的大量存在于微光辐射中的扭曲现象，利用天文望远镜对宇宙射线背景进行筛选，再利用星系群的特点确定一个点，即当宇宙射线穿过极热气体时会产生轻微混乱，混乱的那一刻就是所要找的那个点。
Japanese culture sprouted under the strong radiation of Chinese culture, has already take the characteristic of parent's culture unavoidably.
在汉字文化的强烈辐射下萌发的日本文化，也就不可避免地带上母体文化的特征。
This paper focuses on light scattering and radiation characteristic of target and environment.
本文主要研究目标与环境的光散射辐射问题。
It introduced the characteristic, Treatment state, and harm of nuclear waste, especially described the principle of Radiation-resistant microbe and state of doing harmless treating of nuclear waste.
介绍了核废料的处理状况、特点及危害，重点介绍了微生物抗辐射的机理及在核废料无害化处理方面的应用状况。
So, the effective target of harmonic radar is the nonlinear target with harmonic radiation characteristic.
因此对于谐波雷达而言，具有谐波辐射特性的非线性目标是有效目标。
The scatter theory is managed to analyze and compute the microwave radiation characteristic of metal target. And the actual measurement shows that the method is feasible.
运用散射理论对金属目标的微波辐射特性进行了分析和计算，然后进行实际测量，对比结果的误差，证明此测量方法可行。
The infrared radiation characteristic is the important basis for detection and identification of space target.
空间目标的红外辐射特性是对空间目标进行探测与识别的重要依据。
The results indicated that the degree and characteristic of radiation damage were variable under different irradiation conditions and the somatic cell responses induced by irradiation were reversible.
结果表明，在不同照射条件下辐射损伤的程度和特性不一，由辐射所诱发的体细胞效应大多数是可以恢复的。
Thus the method may be provided as kind of detection system and testing technology for measurement of infrared radiation characteristic from hot jet.
本文为热喷流的红外辐射特性测试，提供了一种可供借鉴的探测系统和测试技术。
Characteristic basis function method (CBFM) in conjunction with method of moment (mom) is applied to analyze the radiation and scattering properties of large array structures.
运用基于矩量法的特征基函数方法分析了大型阵列结构的电磁辐射与散射特性。
Optical sensor target recognition extracts the characteristic of target to perform target recognition after having acquired its reflection and radiation (spectra) characteristics.
光传感器目标识别则是在取得目标的反射特性和辐射特性（光谱）后提取其特征进行识别。
The thermal balance equation of spatial object is established and solved. The light radiation characteristic is obtained by calculating the thermal equilibrium temperature of spatial object.
通过建立和求解空间目标热平衡方程，计算了空间目标的平衡温度，讨论了空间目标的光辐射特性。
Only adopt non contacting radiation temperature measurement method is determined due to the characteristic and certain instability factors of welded pipe manufacture.
而焊管生产的特点和某些不稳定因素，只能采用非接触的辐射测温方法。
The infrared radiation temperature field indicates the infrared radiation characteristic of the background and target, and has important significance in the research of the target and surrounding.
红外辐射温度场反映了背景与目标的红外辐射特性，在目标与环境特性领域的研究中具有重要的意义。
The IR radiation and diffusion characteristic of ground background a re analyzed in detail.
详细分析了地面杂散背景的辐射和散射特征。
The law of characteristic X-rays emitted by target element under the radiation of isotope source in a range of low energy is discussed.
介绍了在低能范围内利用放射性同位素源发出的初级射线，照射和激发靶片元素产生的特征X射线的规律性；
Provide some significant experimental results for determining some properties of igniting fire sources in wildland fire from their infrared radiation characteristic spectrum.
试图通过试验，研究从林火点火源的红外辐射谱特性确定火焰性质的方法。
The electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio (VSWR), horizontal gain and radiation pattern.
研究了这种新型套筒天线的输入阻抗、电压驻波比（VSWR）、增益及辐射方向图等电特性。
By analysing the radiation characteristic and the transmission spectrum of liquid, it is found that the infrared radiation of a droplet comes from its surface.
通过对液体辐射特性和光谱透射特性的分析，确定测得的液滴红外辐射是由液滴表面发射的。
In this paper, the boundary point method (BPM) is applied to the study of the non unique solution at characteristic frequency for exterior acoustic radiation caused by vibrating body.
文章利用边界点法，对振动体外部声辐射在特征频率处解的非唯一性问题进行了研究。
The characteristic of the emission caused in the special spiral magnetic field of hydromagnetic accretion disk is discussed mainly using the formula of curvature radiation.
并着重用曲率辐射公式讨论了在磁流体吸积盘的特殊螺旋强磁场中的辐射特点。
This paper presents several engineering analytical models of silicon solar cell, these models take into account cell temperature and solar radiation on out put characteristic.
本文介绍了几种硅太阳电池工程用模型，这些模型考虑了电池温度和日照强度对输出特性的影响。
In particular, it is emphasized that the physical mechanics method, the theoretical basic of which is the atomic and molecular theory, is important to the radiation characteristic research for plume.
特别对以原子分子理论为基础的物理力学方法研究尾喷焰辐射特性的重要性进行了论述。
The time-domain radiation characteristic of a three V-dipole array has been studied by direct time-domain method. Some valuable results are obtained.
本文利用直接时域法计算了由三单元V形振子组成的直线阵的时域辐射特性，得到了一些有用的结果，为时域天线的进一步研究提供参考。
The study on the target radiation characteristic is base on the study on background radiation characteristic.
背景辐射特性研究是目标辐射特性研究的基础。
When studying alarming technology of moving radioactive monitors, we study the statistical characteristic of environmental radiation background.
在研究移动物体放射性监测报警技术的背景下，对环境本底的统计特性进行了研究。
This dissertation stresses the experimental studies on Z-pinch plasma diagnostics and radiation characteristic. We have finished four items of work: (1) Constructing a small-scale Z-pinch device;
本论文重点研究了Z箍缩等离子体的诊断技术及其辐射特性，具体工作有四个部分：（1）建立一台小型喷气式Z箍缩等离子体装置；
Based on wave radiation transmission theory in random medium and Monte Carlo numerical simulation method, the transmission characteristic of the laser in aerosol in different situations is studied.
本文基于随机介质中波的辐射传输理论，采用蒙特卡罗数值模拟方法，研究了激光在不同情况的大气气溶胶中的传输特性。
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