查询词典 Sc

The experimental regularity and the mechanism of coercitive force of metallic nickel powders and WC-Ni mixture powders used for WC-Ni cemented carbides production have been explored by means of the specific coercitive force H SC physical measure.

以金属镍作粘结剂的硬质合金不仅因以镍代钴可降低生产成本还因具有诸如抗高温氧化、耐腐蚀及在低碳含量下无磁性等特性具有广阔的应用前景。

Linguist Stephen Crain of Sydney's Macquarie University tended to agree:"I've always thought it would be beneficial to expose our children to more than one language," he said.

来自悉尼M大学的语言学家SC倾向于同意这种意见：&我经常思考这将有益于我们的孩子比起只会一种语言来说，&他说。

The fatigue cracking in Ni〓Al SC at room temperature is characterized by the stage Ⅰ crystallographic cracking.

在室温下，Ni〓Al单晶体中的疲劳开裂是第一阶段性质的晶体学开裂。

ABSTRACT With a Ni-base single crystal superalloy, DD8, a series of SC samples solidified with various solid-liquid interface morphologies planar, cellular, dendritical cellular, coarsely dendritic and fine dendritic ctc.

选用镍基单晶高温合金DD8为研究对象，利用籽晶法控制单晶的三维晶体取向，在自制高温高梯度LMC定向凝固装置上制取不同界面形态的单晶试样，首次系。。。

Proper pre-deformation will make T1 phase distribute more dispersively and homegeneously,greatly improving the tensile properties of the alloy.

通过显微组织观察和室温拉伸实验，研究了固溶热处理制度和时效前预变形对Al-Cu-Li-Sc-Zr合金拉伸力学性能和显微组织的影响。

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。

It was concluded that the effects of administration of YT by ip and endermosis is contrary to that of administration by po.The Neostigmine-induced hyperperistalsis of the small intestine was inhibited and the inhibitory effect of Atropine enhanced by ip and sc administration of YT suggesting the mechanism of YT involved the antagonism of Ach. But the contraction of isolated rabbit ileum was not inhibited by YT.

对于羊蹄叶水提取物抗腹泻作用机制的研究表明，腹腔注射、皮肤给药YT可明显抑制新斯的明所致小鼠小肠推进功能亢进，也可加强阿托品抑制小鼠小肠推进运动的作用，从而表明YT的作用机制可能与Ach有关，但家兔小肠离体实验表明YT对Ach所致家兔小肠收缩无明显的抑制作用。

The blank control group was given water and food. Other groups were fed with a high-fat diet, given water with 15% ethanol, and treated with a small dose of carbon tetrachloride (CCl4) hypodermically once a week to establish the fatty liver model. All animals were sacrificed after 8 wk.

空白对照组用普通饲料及普通水喂养；其他组用高脂饮食及酒精水喂养，并结合每周一次行后肢sc小剂量四氯化碳色拉油溶液的方法建立大鼠脂肪肝模型。

The allograft was harvested at 6h posttransplantation. Scrambled ODN group: The donor kidney was stored for 6h in ECs containing 1 u M Liposome/scrambled ODN complexes under hypothermal and hypoxia condition, then the donor kidney was transplanted into a SD recipient, and at 6h posttransplantation the allograft was harvested.

五、试验分四组：(1) Control组假手术组，Wister大鼠麻醉后，开腹后，即将伤口缝合，6h后切取左肾；(2) ECs组供肾经ECs(不含脂质体/ODN复合物)低温缺氧保存6h，移植到受体大鼠6h后切取移植肾；(3)deeoy onN组供肾经含1 pM的deeoy onN脂质体复合物的ECs 低温缺氧保存6h，移植到受体大鼠6h切取移植肾；(4)sc~。

E. mitochondrial membrane protein-bound 〓 was decreased significantly in hypotha- lamus and spinal cord by sc 4. 0g/kg MSG, but not in hippocampus.

荧光探针测定有没有也发现，4.0g/kg MSG引起下丘脑、脊髓线粒体膜结合〓明显降低，而海马无明显变化。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐