半时

An Al-6Mg-0.4 alloy was prepared by semicontinuous ingot metallurgy method. In order to determine the best thermal process technics, the thermoplastic of Al-6Mg casted alloy was studied. The tensile properties of the casted sample were tested at 250, 300, 350, 400, 450, 475 and 500 ℃, respectively, after homogenizing annealing treatment. The high temperature deformation and fracture behavior of the alloy was investigated by scanning electron microscopy and transmission electron microscopy.

摘 要：采用半连续铸锭冶金法制备一种成分为Al-6Mg-0.4的合金，铸锭样品经均匀化退火后，测试其在250，300，350，400，450，475和500 ℃时的瞬时拉伸力学性能，借助扫描电镜和透射电镜的观察和分析，研究该合金的高温变形及断裂行为。

Should be set on high; in repose, folded back like a Greyhound's, though raised above the head in excitement without losing the fold, and even in some cases semierect.

位置高；休息时，象灵缇犬那样向后折，虽然，兴奋时会凸起，但不会没有折痕，有时会是半立耳。

Should be set on high; in repose, folded back like a Greyhound's,though raised above the head in excitement without losing the fold, andeven in some cases semierect.

位置高；休息时，象灵缇犬那样向后折，虽然，兴奋时会凸起，但不会没有折痕，有时会是半立耳。

In this paper, we obtain the global exact controllability for a class of multidi-mensional semilinear hyperbolic equations with a superlinear nonlinearity.

在这篇文章中，我们得到了非线性函数在无穷远处超线性增长时一类高维半线性双曲方程的整体精确能控性。

Bicepts femoris dry matter are 9240.16 ug nonane 100g-1 and 13227.85 ug nonane 100g-1 respectively at 6 months. Aldehydes are primary compounds in process of Xuanwei ham, in which the tiptop content is 6744.60 ug nonane 100g-1 and 11326.18 ug nonane 100g-1 in M. semimembranosus and M. Bicepts femoris dry matter at 6 months, and then drops.

醛类是每个加工阶段种类最多、含量最丰富的挥发性化合物，在6个月时的总含量达到最高值半膜肌和股二头肌干物质中的含量分别为6744.60 μg壬烷·100g~(-1和11326.18μg壬烷·100g~(-1)，随后含量下降。

Alban Ayipaga, a Kasena semiprofessional musician from northern Ghana, says that when his fluteand drum ensembleis performing.

Alban Ayipage，一名来自加纳北部的喀萨纳半职业音乐家在他的长笛与鼓歌舞团表演时说道，"任何人都可以参加"。

Any of various light, porous, semirigid or spongy materials used for thermal insulation or shock absorption, as in packaging.

海绵：如打包时用于隔热或吸震的轻质蜂状半硬性或海绵状材料

Symmetry group is semisimple, the system has a fine cascade decomposition that is a qasi-parallel decomposition, which is corresponding to the decomposition of linear systems under the semisimple symmetry algebra.

由于对称代数对线性系统的结构有重要作用，特别是当该代数半单时，系统可分解为多个独立的子系统，因此如何就给定的线性控制系统构造出其对称代数具有重要意义。

After a comprehensive consideration of force, shape of head and manufacture, it is concluded that the shell of reactor shell with large diameters should use semispherical head, or have a discharger installed at the top of it.

三、中浓纸浆流经上封头时，由于断面收缩和封头顶部容器壁的作用力，在椭圆和半球形封头内出现沟流和滞流现象。

In this paper,about the body of a special ultra-heavy semitrailer without beam,its model is built in ProE sofeware and its static analysis and modal analysis,which is in static state ,constant speed traction state and braking state, are performed in Ansys software.Displacement distribution,stress distrbution,the first five inherence frequencies and vibration modals are educed.

本文针对超重型特种无梁半挂罐车的罐体，用ProE软件建立起模型，用Ansys软件进行罐体在静载工况，匀速牵引工况及制动工况时的静态分析和模态分析，得出罐体在各种工况下的位移分布，应力分布及前五阶自振频率和振型，以验证该罐体设计的合理性。

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