成双成对的

The effect of injection advance angle on spray,combustion and soot formation was investigated.

介绍了采用同步双成像技术研究供油提前角对直喷式柴油机喷雾、燃烧和碳粒变化历程影响的研究结果。

That is: the optical fibers which are to be tested will wind the same circle according to different radius or will wind the different optical fibers circles according to the same radius, making the direction of incident ray side vibration as parameter, we have done the specific experiments and theory analysis to winding waste of quartz system, both refraction optical fibers and Elastic-optic effect of optical fiber.

即把待测光纤以不同的半径缠绕成相同的光纤圈和以相同的半径下缠绕成不同的光纤圈，以入射线偏振光方向为参数，对单模石英系双折射光纤的弯曲损耗与光纤的弹光效应进行了的具体的实验和理论分析。

In addition, a bistatic SAR linear velocity bunching transfer function is obtained in the linear parameter regime.

通过仿真分析，定性地给出载机观测条件对双站SAR海浪线性成像范围大小的影响。

A popular choice is to limit interactions to pairwise energies.

一个流行的选择是对成双能力进行限制相互作用。

A scheme of microscope polarization interference imaging spectrometer based on a Savart polariscope and its basic principles are introduced,and the relative expression of depth of field of MPIIS is derived with the geometrical-optics method.

提出了一种基于萨伐尔偏光镜双折射晶体进行光谱分光的显微偏振干涉成像光谱仪的创新性原理和方案；从几何光学的角度推导了显微偏振干涉成像光谱仪景深的理论计算公式；给出了景深与光谱分辨力的变化关系，证明了景深的存在使系统光谱分辨力不再唯一确定，而是在一定范围内连续变化；通过计算机模拟分析了景深对系统分辨力的影响。

There was on his face an expression of solemn and holy rapture, as if he were revealing to me the mysteries of his religion. I became far more interested in him than in the socks. I looked at him in amazement."My friend," said I,"if you can keep this up, if this is not merely the enthusiasm that comes from novelty, from having a new job, if you can keep up this zeal and excitement day after day, in ten years you will own every sock in the United States." My amazement at his pride and joy in salesmanship will be easily understood by all who read this article. In many shops the customer has to wait for someone to wait upon him. And when finally some clerk does deign to notice you, you are made to feel as if you were interrupting him. Either he is absorbed in profound thought in which he hates to be disturbed or he is skylarking with a girl clerk and you feel like apologizing for thrusting yourself into such intimacy. He displays no interest either in you or in the goods he is paid to sell. Yet possibly that very clerk who is now so apathetic began his career with hope and enthusiasm. The daily grind was too much for him; the novelty wore off; his only pleasures were found outside of working hours. He became a mechanical, not inspired, salesman. After being mechanical, he became incompetent; then he saw younger clerks who had more zest in their work, promoted over him. He became sour. That was the last stage. His usefulness was over. I have observed this melancholy decline in the lives of so many men in so many occupations that I have come to the conclusion that the surest road to failure is to do things mechanically. There are many teachers in schools and colleges who seem duller than the dullest of their pupils; they go through the motions of teaching, but they are as impersonal as a telephone.

他的脸色庄严而虔诚，就像是在向我透露他的信仰中的奥秘似的我对他远远超过了对袜子的兴趣我吃惊地打量着他"我的朋友，"我说，"如果你能这样保持下去，如果这热情并不仅仅缘于新奇，缘于找到份新工作，如果你能日复一日地保持这种热心和激情，不出十年，全美的每一双袜子都将是从你手中卖出去的"我对他推销时的自豪与欣喜所感到的诧异，读者诸君当不难理解在很多店铺，顾客不得不等待有人来招呼当终于有个售货员肯屈尊理你，那样子又让你感觉像是打扰了他他不是陷于讨厌被人搅扰的深思之中，就是和女售货员嬉戏调笑；而你不适时的插入打断了他们的亲昵，为此你感觉好像需要道歉似的他显示出对你和他拿着工资去卖的东西毫无兴趣然而，就是这样一个如此冷漠的售货员，或许当初也是满怀希望和热情开始工作的天天枯燥乏味的苦差事令他不堪忍受，新鲜感磨去了，惟一的乐趣只能在工作之外找到他成了一个机械的没有干劲的售货员机械呆板之后便是笨拙无能随后，看到比他年轻工作热情比他高的售货员得到了提拔，在他之上，他于是变得烦躁刻薄此时便到了他职业生涯的最后阶段他不再有用了我观察到，很多职业中的太多人在人生道路上都有这种可悲的堕落由此我得出结论：机械地应付差事是离失败最近的路大中小学里的许多教师，似乎比他们最最迟钝的学生还要呆滞；他们似乎也搞搞教学，却毫无人的感情，就如同一部电话机

Fruit indehiscent, schizocarpic, didymous, angustiseptate silicles, sessile or shortly stipitate; valves oblong, obovate, or orbicular, 1-seeded, leathery, smooth, broadly winged, keeled, glabrous; replum rounded; septum complete, thickened, opaque, veinless; style obsolete, rarely to 0.5 mm; stigma capitate, entire.

不裂的果，schizocarpic，成双，果实狭隔短角果，无梗或具短柄；裂爿长圆形，倒卵形，或圆形，1种子，革质，平滑，具宽翅，龙骨状，无毛；假隔膜绕行；隔膜完全，加厚，不透明，无脉；花柱淘汰，很少对0.5毫米；柱头头状，全缘。

Synthesis and liquid crystalline behavior of three recently reported mesogenic block-molecules,namely polyhydroxy 1-benzoylaminopropane-2,3-diols Ⅰ,star-shaped pentaerythritol tetrabenzoates Ⅱ and calamitic bolaamphiphiles with lateral chains Ⅲ which are constituted of anisometric block,amphiphilic block and alkyl or perfluorinated chains with different topologies are reviewed in this article.

这些分子由各向异性嵌段、两亲性嵌段和烷基链以不同的拓扑形式组合而成，其合成的关键步骤是Pd(0)催化下碘代全氟烷烃对双键的自由基加成反应以及Pd(0)催化的偶合反应。

It adopted the integration of non-wings are tail wing configuration to fly from nose to tip for the acute angle into, but from top to bottom is curved arch of the fixed front, for the front straight edge of the wing after the double-W, There are four pairs of a combination of aileron, elevator and the flap functions to manipulate the face, with its own aircraft and more than 4 degrees fly-by-wire flight control system to complete match.

该机采用了翼身融合的无尾飞翼构形，从机头至翼尖为成锐角、但上下是拱弧形的固定前缘，前缘为直线，机翼后缘成双W形，有四对综合了副翼、升降舵以及襟翼功能的操纵面，与飞机本身的4余度电传操纵系统相配合完成飞行控制。

This paper presents mainly the reconstruction of controlling system from the single-driver room to the dual-driver rooms based on explosion-proof special chopping regulating speed battery locomotive according to requirement of safe transporting and producing in coal mine.

根据煤矿井下运输安全生产的需要，对防爆特殊型蓄电池式斩波调速电机车进行改造，由单司机室控制改成双司机室控制。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。