不对称

Asymmetric synthesis using chiral phase transfer catalyst is a new method that has just been developed in recent years.

利用手性鎓盐作为相转移催化剂进行不对称合成是近年来刚刚发展起来的一种新的合成方法。

These include inflammatory arthritides such as rheumatoid arthritis, ankylosing spondylitis and reactive arthritis,99 101 synovial impingement,meniscoid entrapment, chondromalacia facetae, pseudogout,synovial inflammation, villonodular synovitis, and acute and chronic infection.102 106 Intrafacetal synovial cysts can be a source of pain because of distension and pressure on adjacent pain-generating structures, calcification,and asymmetrical facet hypertrophy.107 110 In a retrospective review of MRI scans in 303 consecutive patients with LBP, Doyle and Merrilees111 found that9.5% had facet joint synovial cysts, the large majority of which were located posteriorly.

包括炎症性关节炎如类风湿性关节炎，强直性脊柱炎及反应性关节炎等，还有滑液撞击，关节软骨版卡压，关节面软骨软化，假性痛风，滑液炎症，绒毛结节性滑膜炎和急慢性感染。小关节内滑囊囊肿可由于拉伸和压缩临近的疼痛发生结构，骨化及不对称关节增生等原因引起疼痛。在一项303例连续患者的MRI研究中，Doyle 和 Merrilees发现其中9.5%存在小关节囊肿，大部分发生于关节囊后部。

Inflorescences conical; bracts connate laterally for ca. 1/2 their length, forming basal pouches, each subtending a cincinnus of 2--7 flowers

茎切开有红汁；侧小叶在一侧强烈不对称，比顶生的小叶大；在雌花里有许多的心皮；每心皮1胚珠；成熟的心皮20 --40螺旋榨排列在一扩大的花托上 11 Curcuma 姜黄属

Based on the analysis of free-riding, incentive mechanisms that have been proposed for P2P networks including micro-payment, direct reciprocity and reputation based models were surveyed and problems such as hidden information, information asymmetry and collusive behavior were pointed out.

在分析搭便车问题的基础上，全面介绍了基于微支付、直接互惠和信誉模型等典型激励机制，指出了这些模型中分别存在的隐藏信息，信息不对称和共谋等问题。

In conclusion, during the different periods after surgery, the stress distribution of bilateral condyloid processes are dissymmetrical obviously: the stress of affected condyloid process become largen more obviously than that of unaffected one, and it is the most possible in the sixth month after surgery that TMD would befallen.

本实验结论：在本实验条件下，下颌骨体部缺损游离髂骨块移植三种连接方式不同时期，双侧髁突表面应力分布不对称：患侧髁突前后斜面压拉应力明显增高且高于健侧，其中以术后6月时最明显。

The main work is as followings: First, we use KE SI DA microscope for observing the appearance and configuration of bicomponent fiber. It was found in the bicomponent fiber it is a bilateral array for the PET and PTT. The cross section is anisomerous with PTT and PET side by side. After heat treating the shape of single filament becomes three dimensional curly and the number of crimp is biggest in the condition of relaxation. In the range of some tention, the bulkiness and crimpness fall obviously after the bicomponent fiber is treated with heat.

首先利用科视达观察了PTT/PET双组分复合纤维的外观形态，发现PTT/PET双组分复合纤维中PTT、PET两种组分呈双边分布，横截面呈不对称的哑铃状，PTT和PET两组分分居在横截面两侧，单丝经热处理呈现出三维立体卷曲，在无张力条件下卷曲数最多，在一定的张力范围内，随着所加负荷的增加，PTT/PET双组分复合纤维热处理后的蓬松性及卷曲性均下降显著。

Over recent ten years, along with the development of an effective cytogenetical tool " in situ hybridization", asymmetric fusion of common wheat Triticum aestivum L.

最近十多年，随着有效的细胞遗传学工具—原位杂交技术的应用，普通小麦与不同亲缘禾谷类植物的不对称体细胞杂交得以快速发展。

Leaves 3 or 4(–8) per ultimate branch; sheath densely deciduously setose; auricles readily deciduous, falcate; oral setae radiate, purple, ca. 3 mm; ligule prominent, ca. 5 mm; blade lanceolate, 10–23 ×(1–)2.5–3.3 cm, secondary veins 7- or 8-paired, abaxially yellow-green and white tomentellate, adaxially light green and glabrous, base asymmetrically cuneate, margins serrulate.

每末级的分枝的叶3或4(-8)；鞘浓密具刚毛的脱落的；叶耳容易落叶，镰刀形；口头的刚毛辐射状，变紫，约3毫米；杰出的叶舌，约5毫米；叶片披针形， 10-23 *(1-)2.5-3.3 厘米，次脉7-或8配对，背面的黄绿色和白色短绒毛，正面和无毛的淡绿，不对称的楔形的基部，边缘有细锯齿。

Using a purely feed forward neural network model, we show that following repeated directional activation, NMDA-dependent long-term potentiation/long-term depotentiation could result in an experience-dependent asymmetrization of receptive fields.

我们用纯粹的前馈神经网络模型研究表明在重复定向激活后，NMDA依赖的长期增益作用/长期减弱作用导致依赖经验的接收区不对称。

We have initially examined organocatalytic enantioselective synthesis ofα-Hydroxy phosphonates through the reaction of dialkyl phosphates and aldehydes.

我们初步实验了对映选择性的有机催化二烷基亚磷酸酯和醛的反应不对称合成α-羟基膦酸酯。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。