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Based on the projection theorem in the finite-dimensional inner product space, by making use of the generalized singular value decomposition and the canonical correlation decomposition of matrix pair simultaneously, we transform the least-squares problems of the abovementioned inconsistent matrix equations into the problems of solving the consistent matrix equations over given matrix set, and obtain the general expressions of the corresponding least-squares solutions.

S使得‖-X~*‖=‖-X~*‖，其中‖·‖为Frobenius范数，S分别表示矩阵方程 AXB=D，AXA~T+BYB~T=D，AXB+CYD=E和矩阵方程组=，=在一般矩阵集合或对称矩阵集合上不相容时的最小二乘解集合。

parametric vector equilibrium problem ; moving cone ; solution mapping ; continuity

并始终假设下列条件成立：A是一个拓扑空间；X和Z均为拓扑向量空间；集值映射D：A→2X，t∈A，D是X中的非空紧凸子集

In this paper, we shall apply this concept to the ring of linear operators on Banach space X and prove that if a linear operator T on a Banach space X is defined in all of X and has finite descent and ascent then there is a Drazin inverse T~D satisfying TT~DT~k=T~k, T~DTT~D= T~D, and T~DT=TT~D for some nonegative integer k.

以后又对方阵的Drazin逆作了深入的研究。它的一些性质可以参阅。同时对它的应用也作了许多研究，例如可以把Drazin逆的概念应用到Markov过程、线性微分方程组、差分方程组和最优控制等方面。

I've actuallyheard of people who use spring water to wash their denims to avoid small amountof chlorine that's inside tap water, but I wouldn't worry about such a smallamount of chlorine.0 z9 Z# Q8 d K% A0 I9 r D6 ~: R

其实我听到有人使用泉水洗牛仔裤，以避免自来水中的少量氯气，但我不会担心这种少量的氯气会有影响啦。； p2 U% l0 |# X D7 O$ Y+ k

Work each square by bringing your nee d le an d floss up through hole 1 an d d own through hole 2, up through 3 an d d own through 4 to make an X.

工作带上针每平方米和使用牙线，通过孔一，下通孔2时，透过三，下到4作出十

I'd like to dye my hair.

X：我想染头发。

Results: In the early phase of the diseases, both showed abnormal X-ray manifestations with normal or reduced white blood cells. But mucosal changes in pharynxes were different in confirmed and suspicious patients. All suspicious SARS patients had an obvious pharyngeal inflammation including a lot lymphoid follicles over soft palates, and showed a good response to the treatment with antibiotics and antiviral drugs in one week. In contrast, seven confirmed SARS did not have an obvious pharyngitis.The clinical symptoms did not been improved ,but had been deteriorated at day 10 after the onset after antibiotic and antiviral treatment.

结果：临床诊断及疑诊SARS病例临床初期均有白细胞下降或正常，以及胸部χ线异常，但两者咽部黏膜表现有所不同，1 3例疑似病例均有明显的咽部炎症，淋巴滤泡密集覆盖软腭，经抗菌、抗病毒治疗后1周内好转，7例临床诊断SARS病例咽部炎症不明显，经抗菌、抗病毒治疗后临床症状未见明显好转，且多在病程1 0 d后加重。

Li X D. Theoretical study of the autoionization levels for Li-like ions and the dielectronic recombination for He-like ions in Ti and Cr system, and the electronic temperature diagnostic using Ti and Cr as trace.

李向东。Ti、Cr类Li自电离能级、类He双电子复合的理论研究及Ti、Cr示踪元对等离子体电子温度的诊断。

I know you don't do it usually,;$D,w

我知道你一般不会这么做， wv\X

T! d Q$ Q; S$ o9 V1 \0 O Be sure to visit LiuJiaxia Dam next time you come to Lanchow.

M2 d1 W7 _！ m0 A# x '： z 你下次来兰州一定要去参观刘家峡大坝。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。