查询词典 axial

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。

When placing the semiconductor carrying current in the magnetic field axial to the current direction, the semiconductor will generate transverse galvanomagnetic phenomenon, namely generate electromotive force in the direction axial to the magnetic field and current, which is Hall Effect.

把载有电流的半导体放在垂直于电流方向的磁场中时，半导体会产生横向磁场电现象，即：在垂直于磁场和电流的方向产生电动势，这就是霍尔效应。

This evidence suggests that, myf5 is involved in axial and non-axial mesoderm interaction during gastrulation. The disrupted hindbrain segmentation affects the fgf3 signaling, thus causing the CNC to undergo apoptosis.

这些证据显示，myf5在原肠化过程扮演重要角色，Myf5的缺失造成后脑fgf3讯息传递缺失，干扰后脑分节发育，进而影响之后的神经嵴细胞与软骨的发育。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。