中杆

On the basis of the lumped physical-mathematical model of interior ballistics given in reference 1,this paper gives a detailed discussion about the conditions leading to the formation of pressure plateau in the combustion chamber of a RLPG,and derives the analytical relationship between the jet area and other parameters under which the pressure plateau can be formed.

在文献1建立的RLPG集总参数内弹道学数学物理模型的基础上，对RLPG压力平台产生的条件进行了详细的探讨，推导了满足压力平台的喷孔面积与膛内其它参量之间的解析关系式，编制了计算程序，处理了计算过程中所产生的压力振荡问题，获得了工程设计中实用的产生压力平台的中心杆半径与其行程的变化关系曲线。

The wave propagation phenomena of the longitudinal wave in the bars,the flexural and shear waves in the beams were also analysed.

分析了杆中的纵波、Timoshenko梁中弯曲波及剪切波的传播现象。

The experiment study about the subcritical normalizing holding temperature effects the macrostructure and hardness of the 40SiMnCrNiMoA steel shows: When subcritical normalizing holding temperature is 760℃, the ferrite in the mixture phase structure is lumpish, the hardness of the steel is low (about HRC32), and when the holding temperature is over 800℃, the hardness of the steel is about HRC49, the ferrite in the mixture phase structure is in old critical range austenite grain boundaries, it is disadvantage for the steel strengthening. When the holding temperature is 780℃, the mixture phase structure is mixture phase structure including the strip ferrite、martensite and bainite, the ferrite is less than 20%wt, its grains are fine and even, the hardness of the steel is about HRC38, it is in the range of HRC35-40 which is the long-life drill rod needed.

亚温正火温度对40SiMnCrNiMoA的组织和硬度等性能的影响的实验研究表明，当亚温正火保温温度为760℃时，复合组织中的铁素体形态是块状，处理后的材料硬度相对较低（HRC32左右）；而当采用大于800℃温度亚温正火处理，材料硬度为HRC49左右，组织中铁素体大部分较连续地存在于原奥氏体的晶界，对材料强化不利；当40SiMnCrNiMoA钢780℃亚温正火后，硬度为HRC38左右，在以往小钎杆较长寿命所需硬度范围HRC35-40内，而组织为细条状铁素体+以板条马氏体和条状无碳贝氏体为主的复合组织，晶粒细小均匀，铁素体体积含量少于20％。

The production and transmission process of Mach cone observed in many experiments has been captured in this numerical simulation. The relation between thrust, impulse coupling coefficient and one pulse laser energy, pulse width were gained, which agreed well with the experimental results by Germany Space Center.

数值仿真中明显捕捉到有关实验中观察到的马赫杆的产生与移动过程；得出了推力和冲量耦合系数随脉冲能量、脉宽的变化关系，计算结果与德国空间中心实验吻合得较好，为脉冲激光器的选择和脉冲参数优化提供了参考依据。

Objective To stusy the cloning of the genes of glycoprotein and nucleoprotein of rabies virus and expression of the recombinant protein G and N in insect cells by using the baculovirus-insect cell expression system.

目的 从国内狂犬病疫苗aG株中克隆狂犬病病毒糖蛋白基因和核蛋白基因，应用杆状病毒-昆虫细胞表达系统使其在昆虫细胞中表达。

One would approach at first warily through the shrub oaks, running over the snow-crust by fits and starts like a leaf blown by the wind, now a few paces this way, with wonderful speed and waste of energy, making inconceivable haste with his "trotters," as if it were for a wager,and now as many paces that way, but never getting on more than half a rod at a time; and then suddenly pausing with a ludicrous expression and a gratuitous somerset, as if all the eyes in the universe were eyed on him —— for all the motions of a squirrel, even in the most solitary recesses of the forest, imply spectators as much as those of a dancing girl —— wasting more time in delay and circumspection than would have sufficed to walk the whole distance—— I never saw one walk —— and then suddenly, before you could say Jack Robinson, he would be in the top of a young pitch pine, winding up his clock and chiding all imaginary spectators, soliloquizing and talking to all the universe at the same time —— for no reason that I could ever detect, or he himself was aware of, I suspect.

有一只赤松鼠开始谨慎地穿过矮橡树丛，跑跑停停地在雪地奔驰，像一张叶子给风的溜溜地吹了过来；一忽儿它向这个方向跑了几步，速度惊人，精力也消耗得过了份，它用"跑步"的姿态急跑，快得不可想象，似乎它是来作孤注一掷的，一忽儿它向那个方向也跑那么几步，但每一次总不超出半杆之遥；于是突然间做了一个滑稽的表情停了步，无缘无故地翻一个觔斗，仿佛全宇宙的眼睛都在看着它，——因为一只松鼠的行动，即使在森林最深最寂寞的地方，也好像舞女一样，似乎总是有观众在场的，——它在拖宕，兜圈子中，浪费了更多的时间，如果直线进行，早毕全程，——我却从没有看见过一只松鼠能泰然步行过，——然后，突然，刹那之间，它已经在一个小苍松的顶上，开足了它的发条，责骂一切假想中的观众，又像是在独白，同时又像是在向全宇宙说话，一我丝毫猜不出这是什么理由，我想，它自己也未必说得出理由来。

The application of the technique to 600kN prestressed anchor tie and 1000kN anchor cable in Lijiaxia hydropower engineering has proved that the technique can both short the construction period and reach the expected goal. It is worthy of spread to prestressed anchoring construction in excavation of high rocky slope and/or danger rock anchorage.

经600kN预应力锚杆、1000kN快速预应力锚索在李家峡水电站岩质高边坡加固施工中的应用，证明该项技术不仅缩短了施工周期，而且达到了预期效果，值得在岩质高边坡开挖或危岩稳定加固预应力锚固施工中进行推广。

Any of numerous gram - negative,rod - shaped saprophytic bacteria of the phylum Myxobacteria,typically found embedded in slime in which they form complex colonies and noted for their ability to move by gliding along surfaces without any known organ of locomotion.

粘杆菌粘细菌目中的一种革兰染色阴性的、且呈杆状的腐生细胞，通常存在由粘液包围形成混合的菌落，以其没有任何可知的移位器官却能靠表面滑行的能力而闻名到中国译典经典版本中查找关于phylum的最新解释和例句。。。。

As per SASS, and it is proposed that the Chinese tertiary

目前的水质监测没有像SASS中的规定那样包括河流泥沙中的生物学信息，如大肠杆

He surmounts a new height in his future endeavor; for a conceited man, achievements serve as a slide, along which he falls far behind in his self-complacency.

成绩——是谦虚者的撑杆，促使他在新的努力中，跃进更高的境界。成绩——是骄傲者的滑梯，是他在沾沾自喜中，跌倒到最后面。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。