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Fantastic ridges and swept back shapes strongly suggest that energetic radiation and shock waves from NGC 602's massive young stars have eroded the dusty material and triggered a progression of star formation moving away from the cluster's center.

梦幻的脊状尘埃和云气说明了在NGC 602 里面,从大质量年轻恒星发出的高能的辐射和震波已经影响到附近的尘埃,并从星云中心往外触发了一连串的恒星形成。

Results: In 2007, we provided 602 SPET/CT services in myocardial perfusion scan for attenuation correction and 202 SPET/CT services in other scans for image fusion. Among 64 regional bone SPET/CT services, we noted 2 (3.13%) significant motion artifacts and 2 (3.13%) streak artifacts induced by beam hardening effect while among 25 Ga-67 local SPET/CT services. According to the features including low tube currents and slow rotating speed of this SPET/CT, some problems such as the patient safety, longer scan time, alignment mismatch and radiation protection would be analyzed and discussed.

结果:2007年804例SPET/CT造影中,602例心肌血流灌注断层摄影进行衰减校正,共202例病例进行影像融合,其中鎝-99m-MDP局部SPET/CT发生「影像上明显可见的移动假影」的比例为3.13%(2/64),镓-67局部SPET/CT发生移动假影的比钊则为24%(6/25),因射束硬化效应所造成的条状假影有产生干扰融合影像判读的情形,其他问题包括SPET/CT之CT低管球电压及低转速之机器特性、受检者的安全、较长的造影时间、对位错误及辐射防护筝。

The approximate calculating method is proposed for the low loss and thin flake material perturbation outside of the cavity. The measured complex permittivities of teflon,polyvinyl chloride ,pure ceramic flake are in good agreements with the standard data.

在隙缝辐射较小的条件下,提出适于损耗小,厚度薄(1mm左右)的片状材料腔外微扰的近似计算方法,测得聚四氟乙烯、聚氯乙烯、纯陶瓷片等复介电常数与准确值相当吻合的结果。

For meeting the needs of automated real-time dynamic monitoring of heavy fog events by means of a weather satellite remote-sensing technique for specialized meteorological services like military operations and highway traffic, the paper presents a systematic study of spectral characteristics of visible and infra red light, the textures and dynamic dispersals of fogs on satellite imagery in the context of theory on the transmission of atmospheric radiation, thereby revealing their abruptness, waviness and mass-like features, which, in combination with a synthetic technique for cloud/fog maps of multi-channel remote-sensing spectra are used to set up a model for automatic separation of fogs from clouds based on the integrative application of spectral features and texture structures, for which are constructed corresponding discfiminant functions and criteria, and on this basis prepared is a"system for remotely-sensing monitoring of low cloud and heavy fog"which has been used for tests, with the main conclusions shown as follows.

本文针对军事和高速公路等专业气象服务中应用气象卫星遥感技术对大雾进行自动化实时动态监测的实际需要,从大气辐射传输理论入手,系统地研究了气象卫星遥感图像上云雾的可见光和红外光谱特征、纹理结构特征和大雾的消散动态特征,揭示了雾的突发性、波动性和团状雾特性,通过研究多通道遥感光谱的云雾图像合成技术,建立了综合应用光谱特征和纹理结构特征的云雾自动分离模型,给出了相应的判别函数和判别准则,研制了&低云大雾遥感监测系统&,并进行了实际应用试验。

So it is capable to satisfy the requirements both UV intensity and conversion efficiency by using lower voltage or input power and high frequency in the case of matching between discharge tube and power supply.

不对称电压波形的负高压脉冲要比正高压脉冲向放电管中馈入更多的能量并产生更强的紫外辐射,但密集的丝状放电间相互作用使发光的能量转换效率低于交流电压源。

Some are swept back by radiation pressure from sunlight to create straight dust streaks.

其中的一些碎片受阳光的辐射压力作用形成与周围星尘不同的直条状。

Known as acometary globule, the swept-back cloud, extending from the upper right to the head left and below center, is shaped by intense ultraviolet radiation from theOB associationof very hot stars inNGC 6231, off the left edge of the scene. That energetic ultraviolet light also powers the globule's bordering reddish glow ofhydrogen gas.

这团被归类为彗星状云球的箭型的云气,由影像的上右角落延伸到影像中左下方;而位在影像左端之外的星团NGC 6231内有个极端炽热之OB星协,它们强烈的紫外辐射除了造成这个怪异结构体外,也激发云球周围的氢气发光红色的辉光。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。