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Used mainly engaged in Communications equipment Products: Network Analyzer, integrated tester, spectrum analyzer, noise figure testers, receiver, telephone tester, high, low-frequency signal source, audio and video signal source, high, low-frequency oscilloscope, modulation device, video analysis detector.

主要经营二手通信仪器产品：网络分析仪，综合测试仪，频谱分析仪，噪声系数测试仪，接收机，电话测试仪，高、低频信号源，音、视频信号源，高、低频示波器，调制仪，视频分析仪等。

Electro-acoustic equipment categories: electro-acoustic device test system, characteristics of piezoelectric transducer tester, test sensitivity sorting device, sound level meter, precision signal source Sweep, Sweep audio device, the standard sound source, standard test microphone, IEC318 Simulation of the ears, mouth simulation, speakers polarity tester, telephone analyzers, such as electro-acoustic type of testing equipment.

电声器件测试系统、压电换能器特性测试仪、灵敏度测试分选仪、声级计、精密扫频信号源、音频扫频仪、标准声源、标准测试话筒、IEC318仿真耳、仿真嘴、喇叭极性测试仪、电话分析仪等电声类测试仪。

On Tibetan Groove we lounged to Karl Maddisons hypnotic grooves. On Back to the Source we immerse ourselves once again in Karls brilliance. Subtle textures intertwine weaving a tapestry of sonic beauty bringing a sense of comfort and warmth to these twelve beautifully orchestrated songs. Specially tailored for the art of Tai Chi and a perfect compliment to reflection and meditation, each song unfolds like a delicate flower allowing the listener to fully unwind and focus ones energy Back to the Source.

听着 我们在Karl Maddisons催眠曲般的音乐中悠闲地打发时光，不由自主地再次沉浸在Karl Maddisons的中声音优美，能感觉到微不可辨的纹理纠结着编入音乐的织锦，这十二支美丽的管弦乐曲处处带给我们舒适温暖的感觉，尤其是为赞美太极文化之沉思意境量身定做的歌曲每首歌都像纤长柔软的花瓣慢慢展开般，令听者完完全全的放松心情找回最初的来自生命源头的力量

Water source heat pump: water source heat pump-circuit tap-tap technical requirements for the fastening bolts, insulation no injuries, no loose and overheating aging.

水源热泵：水源热泵无励磁分接开关技术要求是各抽头联接螺栓紧固，绝缘无外伤，无松散及过热老化现象。

The formation and the mechanics of the sound source of the spreading machine are explored and the main approach to find the sound source of the spreading machine are studied.

研究了摊铺机噪声源的形成和产生机理，探讨了摊铺机噪声源识别的主要手段，并运用综合评判的方法结合频谱分析，用理论结合试验的方式对摊铺机噪声源进行了有效的识别，找到了对驾驶员耳旁噪声产生重要影响的主要噪声源。

A flat high efficiency super-broadband source was presented. We achieved a C+L-band superfluorescent source, in the region from 1524. 0 to 1600.4nm, the power of the ASE are over -12. 0dBm and the ASE profile excursion is only ±1. 4dB in the region from 1539. 2 to 1600.4nm. The power of the ASE is 22. 1mW and the power conversion efficiency is 18. 8%. 9. The amplification characteristics of thulium-doped fiber amplifier had been studied using the basic theory for fiber amplifier. The connection between the Tm-doped fluoride fiber and silicon fiber was accomplished, and we studied the TDFA and the reason that the expecting results hadn't achieved had been analyzed. The assumption of the Er-Tm-co-doped silicon fiber had been presented, and we studied the Er-Tm-co-doped silicon in cooperation with the correlative corporation, some results had been got and the further studies are carried on.

实验结果得到了覆盖C+L-波段的超荧光光源，在1524.0-1600.4nm波长范围内，自发辐射谱的功率均高于-12.0dBm；在1539.2-1600.4nm波长范围内，自发辐射谱不平坦度为±1.4dB；荧光总功率为22.1mW，功率转换效率为18.8%； 9、应用光纤放大器的基本理论，理论分析和研究了掺铥光纤放大器的放大特性；解决了氟化物掺铥光纤与硅基光纤的连接问题，进行了TDFA的实验研究，分析了没有得到预期结果的原因；最后提出了铒-铥共掺硅基光纤的构想，并与有关单位合作，共同研制了铒-铥共掺硅基光纤，得到了一些前期结果，进一步的研究仍在进行当中。

One is the comparison with violet durable, inexpensive source of light, in a variety of plate without treatment process; three is to speed up the plate sanshang, scale; 4 is to increase the digital source of lead characters chromatic number, step up, process, color management, so that the traditional business card printing products can be easier to keep up with the digital proofing.

一是拔存紫激光等比力耐用、昂贵的光源；二是拔存百般版材不任办理工艺；不一是放慢版材的国产冻、范畴冻；四是补充数码打样机色数，放松泉源、历程、终端摆设的色彩处置，以便使古板制卡产物可以比力便当不天追上数码打样的成果。

Generally a very good agreement was observed between experimental and simulated results , not only in terms of source spectra and overall sound levels, but also in terms of the noise source distribution in the rotor plane as a function of frequency and observer position.

一份非常利益协定通常被观察了在实验性和被模仿的结果之间，不仅根据来源光谱和整体声音强度，而且根据噪声源发行在电动子飞机作为频率和观察员位置功能。

The availability of detailed acoustic array measurements on the same turbines provides a unique possibility to assess the predictions not only in terms of source spectra and overall sound levels, but also in terms of the noise source distribution in the rotor plane as a function of frequency and observer position.

详细的音响列阵测量的可及性在同样涡轮提供一种独特的可能性估计预言不仅根据来源光谱和整体声音强度，而且根据噪声源发行在电动子飞机作为频率和观察员位置功能。

NEXT, the effects of trailing edge noise directivity and convective amplification2 (including the Doppler frequency shift) are applied to these radial source strengths , to obtain the effective noise source distribution in the rotor plane ,as perceived by an observer position was taken to be the position.

其次， 后缘噪声方向律的作用和对流amplification2 向这些辐形来源力量被运用，获得有效的噪声源发行在电动子飞机，as 由职位被接受是位置的观察员察觉。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。