查询词典 anomalous scattering

Transmitted electrons were finally detected by a channeltron electron multiplier operating in single-pulse mode instead of usual measuring current intensity, which can reduce the acceptance solid angle and the contribution of elastic scattering in the forward direction can be minimized effectively.

因采用了恒温控制作用室，以便较准确测量反应室的绝对气压值；同时采用静电型圆柱能量分析器，并用计数率测量模式代替通常的束流强度测量模式，从而可以大幅度减小接收立体角，抑制零度角的弹性散射贡献。

Commonly referred to as scattering communication are mostly tropospheric scatter communications means.

通常所说的散射通信大多是指对流层散射通信。

The scattering characters of some twodimensional and three-dimensional complex objects have been calculated with the numerical method.

在克希荷夫近似条件下，将图形计算方法引入复杂声学目标的背向散射计算。

The flow rate was 1ml／min, an evaporative light-scattering detector was used and the parameters were set as follows: drift tube temperature was 96℃ and gas flow rate was 2.1 L/min .

方法采用Lichrospher-C18色谱柱(4.6 mm×250 mm，5μm)，流动相为乙腈－0.1%醋酸溶液（60∶40），流速1 ml/min，蒸发光散射检测器：漂移管温度96℃，气体流速2.1 L/min。

The results show that the scattering angle distribution differs from that of Maxwellian model while the speed coincides with the half-space Maxwellian distr ibution.

结果表明，气体分子散射后的角度分布与Maxwellian模型存在较大差异，而速度基本服从半空间的Maxwellian分布。

Global illumination plays an important role in 3D graphics. Compared with local illumination, global illumination considers not only direct lighting, but also influence from indirect lights and occlusion. Thus, it can simulate more realistic effects, for instance, refraction and reflection of transparent objects, sub-surface scattering of translucent objects and shadow.

三维场景的全局光照计算[76~78]不仅考虑当前着色点的直接入射光照，还涉及环境中其它景物对着色点的间接光照或遮挡的影响，因而可以模拟比局部光照更真实的效果，如透明物体的折射和反射，半透明物体的子表面散射，阴影等。

Besides, inelastic neutron scattering carried out in Rutherford Appleton Laboratory draw the same conclusion.

另外，在Rutherford Appleton实验室进行的非弹性中子散射实验也显示出了相似的现象。

Based on radiative transfer theory,the reflection properties of cirrostratus consisting of hexagonal ice crystals or equivalent spheres are computed by using the adding-doubling method,respectively.The results show that the Mie scattering calculations at the region of λ≈3.0 μm give good agreement with the hexagonal ice crystals.

根据辐射传输理论，应用累加法，分别计算了由冰晶粒子和等效球形粒子构成的卷层云的多次散射特性，计算结果表明当入射波长λ≈3.0 μm时，等效球Mie理论可以很好地用于计算卷层云的反射特性，但是当λ。8 μm时，尤其在可见光区，将引起显著的误差。

In chapter 2 and 3, experimentally, using the Angular-Resolved high-resolution fast Electron Energy Loss Spectrometer , at the condition of 2. 5 keV incident energy and 50-60 meV energy resolution, we measured the Optical Oscillator Strength Density Spectra for the excitations of 4p, 4s or 3d electron. The oscillator strengths for excitations of the valent shell 4p electron were obtained, and comparisons were done between presently experimental and previously experimental and theoretical results. The experimental results of different groups agree with each other approximately, but the semi-experientially theoretical results do not match with the experimental results. The delayed maximum in the photoabsorption spectra was discussed. It should arise from the transition of 4p→∈d. For the excitation of the inner-valent 4s electron, the discrepancies for the resonant structures in previous electron-impact results and photoionization results were clarified in present work, which confirms again that the fast electron impact method is suitable to measure the optical oscillator strengths. The autoionization Rydberg series 4s〓ns (n=5, 6, 7) and 4s〓nd (n=4, 5, 6, 7) were identified without ambiguity by the measurement at 0°, 2° and 4°scattering angles. The energy levels and natural widths of the excitations of Kr3d and Ar2p inner shell, including optically allowed and forbidden transitions, were determined. The widths of these inner shell excitations are nearly the same, which was interpreted by the Resonant Auger effect .

在第二章和第三章，实验上，使用角分辨的高能量分辨快电子能量损失谱仪，在2.5keV电子入射能量和50-60meV能量分辨下，测量了Kr原子由价壳层4p到内价壳层4s，再到内壳层3d电子激发的光学振子强度密度谱；得到了价壳层4p电子激发束缚态的光学振子强度，与前人实验和半经验理论结果作了细致的比较，说明几家实验是比较符合的，但半经验的理论计算存在问题；分析了光吸收谱中的延迟极大现象，说明在第一电离阈值以上几个eV范围内的极大值源于4p→εd跃迁产生的延迟极大；对于内价壳层4s激发的自电离区，澄清了前人实验中电子碰撞方法和光学方法在共振结构上存在差异的问题，再一次肯定了快电子碰撞方法是获得绝对光学振子强度的一种好方法；通过在非0°散射角的测量（如2°和4°），清楚地标识了4s电子激发的光学禁戒跃迁自电离里德堡系列4s〓ns（n=5，6，7）和4s〓nd（n=4，5，6，7）；通过在0°和4°散射角的测量，观测并标识了几个新的内壳层光学禁戒跃迁能级，得到了Kr原子3d和Ar原子2p内壳层激发态（包括光学允许和禁戒跃迁形成的）的能级位置和自然宽度，用共振俄歇效应解释了这些内壳层激发态（不管是光学允许还是禁戒跃迁产生的）的自然宽度彼此比较接近的原因。

And I began stepping on the other ants, digging up the ant hill, scattering destruction broadcast about me.

我又开始踩踏其他的蚂蚁，挖掉了蚂蚁山，将我身边的一切弄乱直至破坏殆尽。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。