全对称

Leaves apparently alternate, distichous; nanophylls present or absent, opposite to normal leaves; stipules 2; leaf blade 3-veined, one major lateral vein sometimes inserted above the base, or pinnately veined, base asymmetric, margin entire or serrate; cystoliths mostly present, linear or fusiform.

叶表面上互生，2列；微形叶宿存或无，对生于正常的叶；托叶2；叶片3脉，主要的一侧脉高于那些基部，或成羽状脉，基部不对称，边缘全缘或有锯齿；乳状体多数宿存，线或者纺锤形。

ABSTRACT This thesis focused on the studies of setereoselectively total synthesis of naturally occurring bisabolane sesquiterpenes and hydroxamic acid derivatives; it contains the following five parts: Part Ⅰ: Hydroformylation reaction have been taken an overview for past 40 years.

本论文主要对防风根烯类倍半萜天然产物和羟肟酸类化合物的全合成进行了研究，内容概要如下：一、对近年来氢甲酰化反应——特别是不对称氢甲酰化反应作了详尽的综述。

Corolla infundibuliform, rarely campanulate to salverform, slightly zygomorphic, 5--7-lobed; lobes entire, emarginate or dentate at margin.

花冠漏斗状，对左右对称高脚碟状，稍，5-7浅裂很少钟状；裂片全缘，微缺的或具牙齿在边缘。

Leaves 29-84 cm; petiole 7-12 cm, pilose to glabrescent, often lenticellate; rachis moderately pilose to glabrescent, occasionally velutinous; leaflets usually 6-9(-12) pairs; petiolules (2-)4-12 mm, pilose/villous to glabrescent; leaflet blades lanceolate to ovate-lanceolate, 7-14(-19.5)× 3.1-6(-7) cm, often dark grayish brown, moderately pilose to glabrescent, usually with short trichomes and club-glands apically on midveins, veins basally pilose to villous/velutinous, base symmetrical to asymmetrical, margin entire, apex acuminate to occasionally acute.

叶29-84厘米；叶柄7-12厘米，具柔毛到几无毛，通常具皮孔；轴适中具柔毛到几无毛，偶尔被短绒毛；小叶通常6-9(-12)对；小叶柄(2-)4-12毫米，具柔毛/具长柔毛到几无毛；小叶叶片披针形到卵状披针形， 7-14(-19.5)* 3.1-6(-7)厘米，经常暗灰棕色，适中具柔毛到几无毛，通常在顶部中脉上具短毛和棍状腺体，脉基部具柔毛到具长柔毛/被短绒毛，基部匀称到不对称，边缘全缘，先端渐尖到偶有锐尖。

Considering the state of open-phase and asynchronous operation in largepower unit, the magnetomotive force and harmonic current of stator and rotor aretheoretically analyzed. A fault simulation test is designed, which proves the theoreticalconclusion correct. Finally, in this thesis, the problems with open-phase protection andbreaker failure protection are discussed, and the improved scheme of protection ispresented.

对发电机组非全相异步电动运行状态下，定子绕组与转子绕组磁动势以及谐波电流进行了详细的研究，通过磁动势的矢量分解等方法，得出了电枢绕组电流不对称时磁动势的空间分布，推导出了各次谐波电流在定子绕组、转子绕组及相互间的感应关系；通过试验验证了理论分析结果的正确性。

Ten variously substituted benzoyl peroxides were synthesized for Raman spectrometric identification both in solution (CCl 2FCClF 2) and solid state. Different to infrared spectra, Raman spectra have been proved to be a useful characterization of the highly symmetric peroxy bond in diacyl peroxides. The ν OO value ranged from 850 to 899 cm -1 varies regularly with the substituent on the phenyl ring.

合成了全氟和其它对位、间位取代的共10种过氧化苯甲酰，测定了它们的固体和溶液(溶剂为F113， CCl2FCClF2)的激光拉曼光谱，首次发现这类化合物中高度对称的过氧键有较强的特征谱带，即νOO在850至899 cm-1之间，并随取代基不同而呈现规律变化。

Leaves alternate, pinnately veined, with strongly parallel secondary veins, base often asymmetrical, margin entire.

叶互生，成羽状脉，具强烈平行次脉，不对称的基部通常，边缘全缘。

Total gastrointestinal transit time, left colonic transit time, right colonic transit time and rectosigmoid colonic transit time were measured by the simplified method of radiopaque makers.Meanwhile, anorectal vector manometry was performed. The Constipation group was subdivided into Slow-transit group and Normal transit group according to the TGITT to explore the value of anorectal manometry in different types of constipation.

对28例便秘儿童和43例正常儿童进行全胃肠传输时间、左半结肠传输时间、右半结肠传输时间和直肠乙状结肠传输时间测定和直肠肛管向量测压(包括肛管压力、向量容积和对称指数)。

Corolla yellow to red or white, zygomorphic, inside usually glabrous; tube subcampanulate to funnelform-tubular, not swollen, 5-6 X longer than limb, 3-7 mm in diam.; limb 2-lipped; adaxial lip emarginate to nearly entire, extremely short, extending only slightly beyond mouth; abaxial lip 3-lobed, central lobe longer than laterals, apex rounded.

花冠黄到红色的或白色，左右对称，内部的通常无毛；管状的筒部近钟状到漏斗状，不膨胀，5-6 X长于瓣片，3-7毫米直径；瓣片二唇形；对近全缘微缺的正面的唇，极短，只细长在嘴以外延长； 3浅裂的背面唇，中央裂片长于laterals，先端圆形。

But these experiences could be used for reference in the syntheses of flavan like compounds.

这些研究结果为黄烷类天然产物不对称全合成提供了一定的借鉴。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。