共时的

The author also presents the ridge estimate of the parameters by alternating projection when the designing matrix is multicollinearity.

同时还给出了当设计矩阵为复共线时，评估模型基于交互投影迭代算法的参数岭估计算法。

"For chewing, a small piece of the areca palm's fruit is wrapped in a leaf of the betel pepper, along with a pellet of lime to cause salivation and release the stimulating alkaloid s."

咀嚼时，卷少许于蒟叶内，加少量酸橙共嚼，以促使唾液分泌和放出刺激性的生物碱。

When the man's wife and her mother got together,he was betweenScylla and Charybdis.

太太和岳母娘俱在时，做丈夫的真是两面受敌。本新闻共3页，当前在第1页上一页 1 2 3 下一页

When one regressor is an exact linear combination of the other regressor, we say the model suffers from perfect collinearity.

当一个自变量是其它解释变量的严格线性组合时，我们说此模型有严格共线性。

When content of COPEI resin is above 30 wt%, utter phase dispersions occur, furthermore with increasing of contents of C...

当COPEI树脂含量在30％以上时，共混体系出现完全反转相结构，随着其含量增加，环氧树脂分散相尺寸逐渐减小，制得的环氧树脂微球粒径和粒度分布逐渐降低。

There were 36 males and 40 females,with the average age of 47.7 years.36 patients presented with sciatica and perineal numbness,11 patients had painless mass and the other 20 were identified due to other causes.Among 67 benign neurogenic tumors,54 were originated from S1-S3 nerves,3 from S4-S5 nerves and 11 from the presacral space without caudal involvement.Giant cell tumor was found in 60 patients,which included 24 males and 36 females,with an average age of 32 years.Upper sacrum（S1-S2） was involved firstly.There were 56 patients（average,37.7 years） diagnosed as other primary benign bone tumors,which included 24 cases of teratomas,epidermoid cyst or dermoid cyst.Other malignant tumors,including chondrosarcoma （17）,Ewing′s sarcoma/PNET（14）,multiple myeloma（12）,lymphoma（6） and osteosarcoma（6） were found in 64 patients.

其中脊索瘤95例，男62例，女33例，平均年龄55.7岁，骶尾区疼痛是主要症状（82例），半数以上患者伴有坐骨神经痛，肿瘤多先累及低位骶骨（S3~S5）；神经源性肿瘤76例，男36例，女40例，平均年龄47.7岁，神经纤维瘤43例，神经鞘瘤24例，恶性神经鞘瘤9例，主诉多为坐骨神经痛、会阴部麻木（36例）和无痛性包块（11例），20例患者为查体或其他原因检查时发现，67例骶骨良性神经源性肿瘤起源于S3以上神经者54例，起源于S3以下神经者3例，发生于骶前未累及骶管者10例；骨巨细胞瘤60例，男24例，女36例，平均年龄32岁，腰骶尾部不适（37例）、坐骨神经痛（21例）是主要的临床表现，肿瘤多先累及上位骶骨（S1~S2）；骶骨其他原发良性肿瘤及瘤样病变56例，包括畸胎瘤、皮样囊肿、表皮样囊肿共24例；其他原发恶性肿瘤64例，包括软骨肉瘤17例，尤文肉瘤14例，多发性骨髓瘤12例，成骨肉瘤6例等。

This multigrid solver is proven to provide the same accuracy as the finite element solution with respect to energy norm, and the computational complexity is suboptimal.

并证明用共轭梯度法作迭代算子时，该方法可以达到能量模意义下的最优，计算复杂度接近最优。

Around 300000 plants in 50 varieties falling into three categories, namely, tulip, hyacinth and fleur-de-lis, including new varieties of Monarch Blood and Funny Girl as well as 50000 pots of other seasonal flowers of nearly 100 varieties are exhibited on 15th Tulip Exhibition this year. Meanwhile, ten groups of garden sight piece themed on "flower and fashion life" are also arranged on spot of each administration section of Hangzhou Garden and Culture Bureau.

本次郁金香花展已是第15届，共种植了郁金香、洋水仙、鸢尾等三大类50余个品种300000株，其中不乏帝王血、滑稽女孩等新品种，还有近百个品种5万盆时花装点其间，市园文局各个管理处也在现场布置了以"花与时尚生活"为主题的十组园林景观小品。

The partial melting process during increasing temperature includes uniformization of the compositions, divorced eutectic melting, and the partial melting and glomeration of primary α-Mg.

提出半固态熔化过程可分为成分均匀化、共晶熔化和部分初生相的熔化和球化完成三个阶段，不同熔化阶段时，控制性因素不同。

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理，从τ- p变换(即一般线性Radon变换)出发，研究利用阻尼最小二乘平方法求解其正变换，但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应，给这种方法的应用带来了很大的局限性；然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点，给出了求解其数值解的共轭梯度算法；接着讨论了高分辨率Radon变换，它把正则化思想和贝叶斯原理引进到了反演中，很好的克服了离散Radon变换产生的截断效应对结果的不利影响；最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

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。