查询词典 axial

And by using the initial conditions as well as the end conditions, the dynamic problem is then transferred to a second kind Volterra integral equation about the function of the axial strain with respect to time which can also be solved successfully by the interpolation method. For piezoelectric and pyroelectric hollow cylinders, by following the solving procedure for elastic hollow cylinder and by using the electric boundary conditions, the dynamic problems are transferred to two Volterra integral equations about two functions of time, one is axial strain and the other is related to electric displacement, which can also be solved efficiently and quickly by employing interpolation method. The elastodynamic solutions of hollow spheres, which are made of elastic, piezoelectric and pyroelectric materials, respectively, for spherically symmetric problems are also obtained.

对于弹性空心圆柱，通过引入一特定函数将非齐次边界条件化为齐次边界条件，然后利用正交展开技术，导出关于时间函数的方程，再结合初始条件和端部边界条件，将原问题转化为关于一个时间函数的第二类Volterra积分方程，运用插值法可给出此积分方程的解；对于压电和热释电空心圆柱，利用求解弹性空心圆柱相似的方法，再结合电学边界条件，原问题转化为关于两个时间函数（轴向应变和与电位移有关的函数）的第二类Volterra积分方程组，同样可用插值法来构造相应的递推公式高效地求解此积分方程组。

In this paper, several methods are put forward, by which axial resolution of scan microscope could be improved. One is that detecting method of ordinary laser feedback is improved, the orthogonal polarized lights split by Wollaston prism are detected separately, comparing to the ordinary feedback, the axial resolution is improved about 2.9 times.

提出并实验研究了几种可以提高激光反馈扫描显微镜轴向分辨率的方法，一种方法是对常规激光反馈实验中的探测技术进行了改进，用渥拉斯顿棱镜把垂直偏振光分开探测，轴向分辨率可以提高约 2 9倍；另一种方法是用双频激光器中产生的偏振态相互垂直的o光和e光作为反馈光代替了传统的单一光的反馈，轴向分辨率被提高了约 2倍；第三种方法是用双频激光器中产生的o光或e光作为反馈光，轴向分辨率可以提高约 2 5倍。

When the 3-keto glycosides was reduced by sodium borohydride, the D-allo configuration was considered the most probable since it has an equatorial arylamino group at C-2 position and reduction of the keto group was considerably less hindered to equatorial attack by borohydride ion to give an axial hydroxyl, than axial attack by borohydride to give an equatorial hydroxyl.

并对反应的立体化学问题进行了讨论，认为该反应的立体专一性是由于向下直立键上的1-位α-甲氧基和2-位向下平伏键上芳胺基大基团的共同影响，造成内侧进攻受阻，而使得氢负离子只能从外侧进攻的结果。

The invention comprises a cyclopalladated catalyst with axial chiral binaphthyl backbone containing phosphine ligand as well as the synthesis thereof, and the application of the catalyst with cyclopalladated catalyst with axial chiral binaphthyl backbone containing phosphine ligand with a similar structure to the hetero atom norbornadiene ring cleavage reaction through an asymmetric catalytic organic boron agent.

本发明包括一类具有轴手性联萘骨架含膦配体的环钯催化剂及其合成，以及其与具有类似结构的轴手性联萘骨架含膦配体的环钯催化剂在不对称催化有机硼试剂对杂原子降冰片二烯开环的应用。

The deformations of axial yarns packed by braider yarns have been calculated through the changes of fiber packing fractions of axial yarns. The relations between the braiding parameters of the composites were derived and the fiber volume fraction of the composites was computed exactly.

基于子单胞模型，通过计算轴纱内纱线填充因子，考虑了轴纱受编织纱挤压产生的变形，进而，建立了复合材料编织结构参数之间的关系，准确地计算了复合材料的纤维体积含量。

Using sagital T1 weighted imaging (T1WI) of MRI and axial Diffusion imaging of MR and axial diffusion weighted imaging is a precise method to diagnosis callosal infarction.

结合MRI矢状T1加权(T1WI)扫描，和弥散加权成像横断扫描是诊断胼胝体梗死的准确的方法。

Afterwards, the crash process of the thin-walled structure is simulated to find the effect of the cross section, the thickness and the pre-deformation on the crash capacity, and the axial impact deformation of the circinal tube is analyzed in the theoretical way, the axial impact deformation of the square tube and subulate tube are analyzed by simulation.

最后本文建立了原DF_(8B)机车车体正面碰撞刚性墙的仿真模型，在分析碰撞结果后，对原DF_(8B)机车车体的底架和司机室结构进行了改进；并利用薄壁圆管和锥形结构设计了吸能装置，利用凸凹相见的防爬板设计了防爬装置；对安装了吸能装置和做出结构改进的耐碰撞DF_(8B)机车以10m/s和15m/s速度正面撞击刚性墙进行仿真，结果表明碰撞时吸收装置先于车体主结构破坏，吸收碰撞能量，其吸能能力达到了国外有关标准的要求。

Methods. Electrical conductiity measurement was performed on 24 axial, circumferential, and radial annulus fibrosus specimens and 24 axial nucleus pulposus specimens from boine coccygeal discs.

研究方法：对24例牛尾椎椎间盘的纤维环标本进行了轴向、周围和放射向的导电性测试，对24例牛尾椎间盘髓核标本进行了轴向的导电性测试。

Based on an analysis of distribution pattern of hydrocyclone"s axial velocity, by changing the inlet flow rate Qi and split ratio Fand making an investigation in the effect of Qi and F on axial velocity field, the factors causing the forming of short-cut circuit and circulating flow are found. It is considered that the short-cut circuit and circulating flow are produced by the structure of the hydrocyclone, and can"t be eliminated completely, though they interfere the flow field inside a hydrocyclone and affect the separation accuracy. Test results show that, by increasing Qi and F and controlling them in a certain range, the separation efficiency of the hydrocyclone can be improved.

在研究旋流器轴向速度分布规律的基础上，分析了短路流与循环流的形成原因，试验研究了改变操作参数，即改变入口流量Qi与分流比F对轴向速度场的影响认为短路流与循环流是由旋流器结构决定的，很难完全消除，它们干扰了旋流腔和大锥段的流场，在一定程度上也影响了分离精度试验结果表明，加大入口流量Qi与分流比F，并将其控制在一定范围内，便可提高分离效率这项研究对水力旋流器分离机理的认识与实际应用均有重要意义

As the foaming agent is the continued increase in frother dosage of 400g / t, the gas holdup appears the phenomenon of axial turning point was not obvious, the axial distribution of gas holdup tends to uniform.

随着起泡剂用量的继续增加，在起泡剂用量为400g/t时，气含率出现轴向拐点现象不明显，气含率轴向分布趋于均匀。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。