单射

"There was something very unusual about him, about his physiognomy, about his body constitution," said Marc S. Micozzi, former director of the National Museum of Health and Medicine in the District, which displays pieces of Lincoln's skull, his hair and the ball fired from Booth's single-shot derringer.

华盛顿特区国家健康药物博物馆的前任主管马克·米可兹认为"他的外貌和身体构造肯定有些极不寻常之处"，这个博物馆里陈列着部分林肯的头骨、头发以及从杀手布斯的单管手枪中射出的子弹。

The experiment results show that enstatite is transformed into the perovskite structure under the shock compression whereas the perovskite structure is transformed retrogressively into the single-chain structure during the process of pressure release.

对回收样品进行的X射线衍射分析结果表明：两发顽火辉石回收样品的主相均是单链状结构硅酸盐，而非钙钛矿结构；另外，回收样品中均未观察到氧化物SiO2 和(Mg0.92， Fe0.08)O的XRD特征谱线；两发MgO+SiO2回收样品中均观察到SiO2和镁橄榄石(Mg2SiO4)而没有氧化物MgO。

The purpose of the device is to solve the problem that current angle tuning technique can not perfectly control the small angle of the two incoming optical beams of the single etalon.

本发明的目的是解决现有角度调谐技术对于单标准具的两束入射光的小夹角控制不好的问题。

Points out that the propagational derection and vibration surface of ordinary and extraordinary ray in crystal can be determined by the characters of wave surface in crystal and Huygens,Construction.

本文研究单色自然光入射到单轴晶体后产生双折射现象，所得的O光和e光在晶体内的传播方向和振动面，可利用晶体中波面的特点和惠更斯作图法来确定，使读者对这一问题有更进一步的认识和理解。

Among them 168 cases cut by high frequency instrument,accounting 60.43 percents.64 cases cut by radiofenqency instrument accounting 23.02percents.46cases cut by joint treatment accounting 16.55percents.conclusions it is a safe and effective methods to cure the peptic polyps by radiofrequency and high frequency under gastroscope.it is more effective than only using singal instrument and it decreases the occurrence rate of bleeding and fenestrate of alimentary canal.

内镜下射频及高频联合治疗消化道息肉是一种安全有效的方法，比单用效果更为确切，并降低了治疗后消化道出血和穿孔的发生率。

Competition among four-wave mixing with two dressing fields, the six-wave mixing with one dressing field as well as the eight-wave mixing propagating along the same direction can be evoked by adjusting laser beams because these multi-wave mixing signals are induced by atomic coherence between common levels.

研究发现，通过调节激光束方向，沿同一方向出射的八波混频、双缀饰四波混频和单缀饰六波混频信号因共用能级的原子相干产生而出现竞争现象，通过控制缀饰场减弱四波混频和六波混频信号强度，可以达到增强八波混频信号的目的。

Synthetic rubber, rubber side grillwork, cloth at the end of rubber, sponge rubber, single / dual Sticking EVA, rubber jai, HBR, high foam, foam, fire sponge, sponge peaks, separated / sound-absorbing cotton, pearl cotton, flannel, velvet paper, paper Park, filters, film books, fast bus paper, the red cylinder of paper, the Green Shell paper, composite paper, mica plate, cold red boards, epoxy boards, electricity boards, PVC, PET film, Mark La films, golden paper, light silver paper, aluminum foil, laser paper, conductive paper cards and so on.

合成橡胶，方格纹橡胶，布底橡胶，海棉橡胶，单/双面贴EVA，回力胶，HBR，高发泡，泡棉，防火海棉，波峰海棉，隔/吸音棉，珍珠棉，绒布，绒纸，纸朴，隔尘网，簿胶膜，快巴纸，红缸纸，青壳纸，复合纸，云母板，冷冲板，环氧板，电木板，PVC，PET胶片，唛拉片，金光纸，光银纸，铝箔纸，镭射纸，导电咭纸等。

Amur tigers had a copulatory pattem with no lock,thrusting, multiple intromission,and single ejaculation,which belonged to copulatory pattern No.11 in Dewsbury\'s copulatory-patterned system.5 The behaviors that accounted for most of the total time budget during the parturition period were grooming,lying and licking kittens,26.90%,26.23%and 23.83%,respectively.

东北虎的交配模式属于Dewsbury分类系统中的第11种，即无锁结、有抽动、单次插入、多次射精。5在分娩过程中，雌虎的梳理、卧息和舔仔行为时间最长，分别为26.90%、26.23%和23.83%；梳理、努责和舔仔行为发生频率较高，分别是37.95%、18.75%和12.50%。6在育幼过程中，雌虎室外期与室内期哺乳和亲仔行为的时间差异极显著(P＜0.01)，离开行为的时间差异显著(P＜0.05)。

The influences of alkali concentration, temperature, polymer and additive on ionic conductivity and electrochemical stability were studied with orthogonal experiments and single factor experiments design, the relation of structure and ionic conductibility is researched by FIRT, XRD,DSC and SEM analysis ways.

结合正交设计实验和单因素实验研究了碱浓度、温度、聚合物以及增塑剂对固体电解质离子电导率、电化学稳定性的影响，用红外光谱、X衍射分析和差热分析等手段研究其结构与离子导电性能的关系，摸索出了本实验条件下的最优方案。

In section one, We characterize when matrix ring, upper triangular matrix ring and trivial extension are simple J-injective rings.

在文章的第一部分我们给出了全矩阵环、上三角矩阵环和平凡扩张是单J—内射环的刻划。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。