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Seen in silhouette near the top of the view are small, dark clouds of obscuring cosmic dust.

影像顶端的这些既小又暗的宇宙尘埃云,是以发现者命名的谢克瑞云球(Thackeray's Globules),它们也是未来新恒星可能成形的区域,不幸的是,附近年轻恒星所发出的高能量辐射,很可能也正在侵蚀它们,因此它们未来是否能形成恒星之命运未卜。

On the surface, the stuff mostly exists as ice; if puddles form at all, they may do so only fleetingly.

在地表,水多以冰的形式存在;如果有泥沼(我们至今还未找到任何一滩),它也只可能非常短暂地成形。

The unadorned skin of a hairless animal, the species unprovable, forms the binding.

这本书的书页,用的是未加工的去掉毛发的动物的皮,成形装订而成。而动物的种类已不可辨认了。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下,GSC-SSF方法还可以提高阵列的虚拟孔径,从而提高估计的性能;可以证明,Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似; 3、提出了二维GSC-SSF方法和宽带谱相关DOA矩阵方法,利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题,并具有阵元数少、计算量较小的特点; 4、提出了时频子空间拟合和宽带时频DOA估计算法,将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中,利用时变滤波实现信号选择性测向和干扰抑制,特别适合于谱时变信号;可以证明传统特征结构法可看作是时频子空间拟合方法的特例; 5、提出了多用户环境下阵列响应的估计方法——CARE方法,该方法对信号结构和传播参数(主要是散射源分布与角度散布)的约束较少,适用于各种几何结构的阵列甚至未校准的阵列,能够直接得到阵列响应的闭式解,因此计算量小、稳健性好,不存在收敛问题; 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案,通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束,并保证各波束内的用户信号各不相同且相互干扰最小;其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点,其有效性已得到外场实测数据的证实。

Gastroplasty: This is similar to a bypass, but the pouch isn't totally closed off from the rest of your stomach.

胃成形手术:此类手术与胃绕路手术相似,只是未将胃袋与胃的其余部分完全隔离。

But China's leaders also face rumblings of discontent from leftist nationalists, who see the downturn as a chance to halt market-oriented reforms at home, and for China to assert itself more stridently abroad.

流光溢彩的自信图景远未成形,中国目前正面对一场政府并不乐见的激烈争论:既涉及它的经济体制,也事关它的大国之愿。

Yun-strip method, the circle-shaped bath temperature higher than the crescent-shaped article transport transport of temperature, the temperature was higher than the crescent-shaped article transport serrated Article transported bath temperature, in the 12mm flat bottom welded seal, using serrated transport of , and with the magnitude and the swinging groove on both sides of the pause, effective control of the bath temperature, so that pore size of the melt is essentially consistent with the roots do not form a welding groove tumor and decrease the chances of burn-through, no penetration has The improvement of the peace panels of the single-sided welding butt welding flat-sided shape is no longer difficult.

运条方法,圆圈形运条熔池温度高于月牙形运条温度,月牙形运条温度又高于锯齿形运条的熔池温度,在12mm平焊封底层,采用锯齿形运条,并且用摆动的幅度和在坡口两侧的停顿,有效的控制了熔池温度,使熔孔大小基本一致,坡口根部未形成焊瘤和烧穿的机率有所下降,未焊透有所改善,使乎板对接平焊的单面焊接双面成形不再是难点。

This process is makes the improvement in the original two person two-sided synchronized GTAW process which one time welding two-sides formings, we have carried on a series of welding testing on 8mm SUS304, this new process has be able to decrease weld defects on the tradition two person on both sides synchronized GTAW process, shortenned construction work period, increase welding quality, as well as eliminate tradition two person on both sides synchronized GTAW for SUS304 austenite stainless steel in easy emergence of incomplete joint penetration and porosity.

此工艺是在原有的双人双面同步钨极氩弧焊工艺基础上进行的,即将原有的一次焊双面成形改为两次焊成形,经过在厚度为8 mm的SUS304上进行的一系列焊接工艺试验,验证了这项新工艺既减少了传统工艺中繁琐的工艺过程和焊接工艺缺陷,缩短了施工工期,提高了焊接质量,又消除了传统8 mm SUS304不锈钢双人双面同步钨极氩弧焊过程中易出现的未焊透和咬边现象。

This, like many similar embarrassments, has been occasioned by the error of ascribing to the mental condition of an unformed society a faculty which pre-eminently belongs to an advanced stage of intellectual development, the faculty of distinguishing in speculation ideas which are blended in practice.

这和许多相似的困难一样,是由于把显然属于智力发展进步阶段的一种能力,把在实践上混合在一起的各种纯理论观点加以区别的能力,错误地认为属于一个未成形社会的心理状态而产生的。

The last of Le Corbusier's unfinished projects is finally taking shape.

柯布一生最后一个未完成的项目终于成形。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。