In July, a sister craft of the crashed spaceplane was reported to be about half-finished.

A prototype spaceplane developed for the US military has been launched into orbit from Florida.

一架美国军用航天飞机在佛罗里达州发射升空。

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The TTC& DT system, main functions and key technology of spaceplane are also discussed.

讨论了空天飞机测控通信体制、主要的系统功能和关键技术。

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The author discussed a sort of the fully nonlinear second order elliptic equations about the function of eigenvalues of Hessian matrix. Finally, as an application, the Dirichlet problem of spacelike hypersurfaces with prescribed function of principal curvatures in n-Minkowski space is established and solved.

讨论了与Hessian阵本征值函数有关的非线性椭圆型方程.作为应用，对n维Minkowski空间中预定主曲率对称多项式的类空超曲面方程的Dirichlet型问题给出了解的存在性。

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The paper gives the position vector field of the rotational spacelike hypersurface in Lorentz-Minkowski space. After computing the principal curvatures and solving the differential equation system, it proves the existence of the rotational spacelike hypersurface about given principal curvature function in Lorentz-Minkowski space.

给出（n，1）型Lorentz-Minkowski空间中给定主曲率函数的旋转类空超曲面的位置向量场，通过计算超曲面的主曲率，证明了这类超曲面的存在性。

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In this paper, we study 2-harmonic spacelike hypersurfaces in a locally symmetric and conformally flat lorentz manifold and obtain a pinching theorem of the class of hypersurfaces to the ambient manifold.

研究局部对称共形平坦洛伦兹流形中的2-调和类空超曲面，得到它对外围空间的一个拼挤定理。

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Then, the mechanism is discussed on the inspiration thought, it attaches importance to the physical context by means of the spacelike correlation and the theory of dissipative structure based on the second law of generalized thermodynamics.

在广义热力学第二定律的基础上，利用耗散结构理论和类空关联事实，着重从物理学角度讨论了灵感思维的产生机制。

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An existent theorem on spacelike Weingarten hypersurface

关于类空W超曲面的一个存在性定理

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Maximal spacelike submanifolds in a pseudo-Riemannian spaces

一般伪黎曼流形中的极大类空子流形

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Spacelike graph equation in de-Sitter space

de-Sitter空间中的类空图方程

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A Pinching Theorem of 2-Harmonic Spacelike Submanifolds in a Class of Lorentz Manifold

一类洛伦兹流形的2-调和类空超曲面的一个拼挤定理

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A similar discussion is given on the spacelike maximal surfaces in H_(?)~(?).

对偶地对H1~3中的类空极大曲面作了类似的讨论。

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Research on LCC Sensitive Parameters of Operationally Responsive Spacelift Equipment Architecture

应急空间航天运输装备体系LCC敏感参数研究

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Bulk amorphous alloys, due to their special physical, chemical and mechanical properties, have found applications in many fields such as aviation, spaceflight, electronics, mechanics and chemical industry.

块体非晶合金具有许多独特的物理、化学和力学性能，使得其在航空、航天、电子、机械和化工等领域和行业中呈现出广阔的应用前景。

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Some theoretical problems of the spaceflight mechanics

《航天力学中的一些理论问题》前言

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On the some theoretical problems of the spaceflight mechanics(ⅱ)( 02)

关于《航天力学中的一些理论（Ⅱ）》的讨论（02）

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The new spaceflight TT& C system aims at digital system, the intermediate frequency digital transmitter which base on software radio theory has the characteristics of universal, flexible and low bit-error rate, and it is an important part of modern radio communication system.

新一代航天测控系统正朝着数字化的方向发展，而基于软件无线电理论的中频数字化发射机及接收机具有通用性、灵活性、误码率低的特点，已经成为现代无线通信系统的重要组成部分。

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On the basis of multiple satellites task requirement analysis, the paper creates the scheduling model of Spaceflight TT& C network resource allocation, and gives the related model solution arithmetic.

在对多星任务需求分析的基础上，本文建立了航天测控网资源分配的调度模型，并给出了相应的模型求解算法。

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Research of Resource Allocation and Scheduling in Spaceflight TT& C Network

航天测控网资源分配和调度方法研究

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Today, the only famous American spacefarer is tycoon Dennis Tito, who bought his rocket ride from the Russians.

今天，唯一一个出名的美国宇宙飞行员是在俄国搭乘航天飞机进行太空旅游的美国企业大亨丹尼斯•狄托（Dennis Tito）。

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Study on Half-ridge-spaced and Close Planting Cultivation Method of Maize

玉米垄半空密植高产栽培法的研究

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