角宽度

The comparison of the three noise values indicated that while the product of pulse width and angular frequency is larger than 1, the pulse width jitter would contribute considerable power to the total noise power spectrum, which is consistent well with the theoretical analysis.

比较三个噪声值表明了：在脉冲宽度角频率积Tω＞1的情况下，脉冲宽度抖动对总噪声量有较大贡献，脉冲宽度抖动不可忽略。

［Objective］To identify the standard of radiographic diagnosis and analyse the measurement between tailor's bunion and normal feet.［Methods］The fourth-fifth intermetatarsal angle (IM4～5),modified fourth-fifth intermetatarsal angle (MIM4～5),metatarsophalangeal-fifth angle,lateral deviation of the fifth metatarsal angle,width of fifth metatarsal head,distance of prominence of the fifth metatarsal head were measured by X-ray for 131 feet of normal persons and 117 feet of tailor's bunion. The measured results and other clinical presentations were compared.

［目的］通过对小趾囊炎足与正常足X线的测量及对比分析研究，明确小趾囊炎足X线诊断标准［方法］对131例正常足与117例小趾囊炎足的第4～5跖骨间角(IM4～5)，改良4～5跖骨间角(MIM4～5)，小趾内翻角，第5跖骨外翻角，第5跖骨头宽度及突出距离进行X线测量，结合临床对测量结果进行对比分析研究。

Methods］The fourth-fifth intermetatarsal angle (IM4～5),modified fourth-fifth intermetatarsal angle (MIM4～5),metatarsophalangeal-fifth angle,lateral deviation of the fifth metatarsal angle,width of fifth metatarsal head,distance of prominence of the fifth metatarsal head were measured by X-ray for 131 feet of normal persons and 117 feet of tailor's bunion.

方法］对131例正常足与117例小趾囊炎足的第4～5跖骨间角(IM4～5)，改良4～5跖骨间角(MIM4～5)，小趾内翻角，第5跖骨外翻角，第5跖骨头宽度及突出距离进行X线测量，结合临床对测量结果进行对比分析研究。

Numerical calculation of FEM and experimental investigations are used in the present research. The influence of loading condition and size of indenter on the tensile strength of rock has been investigated. The results obtained by numerical calculation and experiments show that tensile strength of rock will increase with the increase of indenter size.

通过有限元数值计算与理论分析相结合的方法，对不同载荷接触条件和接触面宽度角下的岩石抗拉强度进行了深入分析，结果表明，在圆弧形和平台加载条件下计算的岩石抗拉强度随载荷接触宽度角α的增大而增大。

On an unlined field, the boundary is defined as an imaginary line between two field markers with the thickness of said markers.

没线的场地使用两个角标，线的宽度相当于角标的宽度。

Methods: The sexes, ages, heights, weights, painful characters and accompanied symptoms were recorded, and the femoral angle, tibial angle, femorotibial angle, joint space angle, and the height and width of condylus medialis and lateralis ...

选取 2 9例(40膝)骨关节炎患者，记录被检查者的性别、年龄、肢别、身高、体重、疼痛性质、伴随症状等，测量患者股骨角、胫骨角、股骨胫骨角、关节间隙角，以及股骨内侧髁、外侧髁高度和宽度并与 19例正常膝关节进行比较。

The fiber length has only little influence on the basic density within the growth rings, and significant correlation at 0.01 levels was found between the basic density and the fiber length among the different rings. Only slight negative correlation was found between the basic density and the fiber width within the growth rings, but significant positive correlation at 0.01 levels was indicated between the basic density and the fiber width among the growth rings, contrary to that of fiber length. It was demonstrated that significant positive correlations at 0.01 levels between the basic density and fiber double wall thickness, fiber length to width ratio and double wall thickness to diameter ratio, significant negative correlations at 0.01 levels between the basic density and fiber diameter and diameter to width ratio, only slight negative correlation between the basic density and fiber width both in the same growth rings and among the different growth rings. No significant correlation was found between the basic density and the vessel morphological features, nor was the tissue proportion in the same growth rings. But among the different rings, it was found there was significant positive correlation at 0.01 levels between the basic density and the fiber proportion among the different rings, and significant negative correlation at 0.01 levels between the basic density and vessel-elements proportion and ray proportion, only slight negative correlation between the basic density and the parenchym proportion. Significant or no significant negative correlation was found between the basic density and the microfibril angle in the same growth rings, but significant negative correlation was found between the basic density and the microfibril angle among the different growth rings.

生长轮内纤维长度对基本密度的影响不大，而在不同生长轮间纤维长度与基本密度达极显著正相关，纤维宽度与此相反，同一生长轮内纤维宽度与基本密度极显著负相关，不同生长轮间只有微弱负相关；基本密度与纤维双壁厚、长宽比、壁腔比在生长轮内和生长轮间均呈极显著正相关，而与胞腔直径、腔径比均呈极显著负相关，仅与纤维宽度呈微弱的负相关；导管形态对基本密度的影响不显著；同一生长轮内组织比量对基本密度的影响也不显著，但不同生长轮间基本密度与纤维比量呈极显著正相关，与导管比量和木射线比量呈极显著负相关，与轴向薄壁细胞比量仅呈不显著负相关；生长轮内基本密度与微纤丝角呈显著或不显著负相关，但在生长轮间这种负相关达到极显著水平。

For five-coordinate NC end milling, the author gives the equation of tilt angle, the optimum algorithm of tilt angle, the analysis of machined errors, the compensative algorithm for cutter axis tilt error, and the formulae of feed length, feed width and cutter axis swing angle.

推导了五坐标端铣数控加工中的后跟角计算公式，提出了后跟角的优化计算方法——刀盘周边7点干涉检验法，分析了各种加工误差，提出了刀轴摆动误差补偿方法——刀具切触点偏置法，给出了走刀步长、切削宽度以及刀轴摆角的计算公式。

New observables which can be used to estimate the fraction of the anisotropicemission particles to all the final state particles and the degree of concentrationaround the flow direction are proposed to characterize the flow.

末态粒子的极角分布宽度是描述流效果的一个重要参量，只有综合考虑流角，流值和极角分布这三种因素，才能正确反映集合侧向流的整体特征。

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。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。