不对称的

It was pointed out that introduction of cyano group into chain of the energetic binder could improve mechanical properties of solid propellant with it.

分析了3，3 双取代氧丁环上两个取代基的类型对其均聚物聚集态的影响，认为在3，3 位进行不对称取代可获得液态含能粘合剂。

When the ligand 52 and 54 with only planar chirality were used the high enantioselectivity was obtained.

我们对配体平面手性作用的研究表明平面手性可以独立地进行不对称诱导，最高给出93％的ee值。

AIM: To synthesize 2 novel chiral ligands derived from cinchona alkaloids and study their catalytic performance in asymmetric dihydroxylation of 5 olefins.

目的：合成两种新的金鸡纳生物碱类衍生物配体并将其用于催化五种烯烃的不对称二羟化反应，考察催化效果。

The Pt/FDU-14 catalysts can be effectively applied in the asymmetric hydrogenation of ethyl pyruvate after chirally modified with cinchonidine.

考察了经过手性分子辛可尼定修饰后的Pt/FDU-14催化剂在丙酮酸乙酯不对称氢化反应中的催化性能。

Microscopically, the insufficiency of talents in international trade and international finance makes the enterprise undertake a bigger risk; the second, the commensuration of in formation leads disordered competition; third, the insufficiency of research ability impedes Chinese goods from entering international market.

从微观方面看，国际贸易及国际金融方面的人才缺乏，使企业承担更大的经营风险；其二，信息不对称导致无序竞争；其三，研发能力不足阻碍我国产品进入国际市场。

There was no consistent distribution of this asymmetry between the convex and the concave sides of the curve.

AIS患者的这种椎弓根不对称在侧凸凸侧和凹侧之间没有一致的分布。

In this dissertation, eight novel bisoxazoline ligands L1-L8 containing 2,2-dimethyl cyclopropane units have been synthesized and evaluated in the asymmetric cyclopropanation and Diels-Alder reaction, moreover the influence of many factors on the enantioselectivity of the new ligands was studied in detail.

在本论文中，我们设计并合成了8个新型双噁唑啉手性配体L1～L8，并研究它们在环丙烷化反应与Diels-Alder反应中的对映选择性，以及影响配体不对称诱导性能的各种因素。

Although many synthetic routes to spiro[4,5]decane have been reported, few reports have been focused on the asymmetric synthesis of the title compounds.

虽然有关旋环状[4，5]癸坑的合成途径已经被报导，但其中仅有少数几篇是利用不对称合成方法来合成具有光学活性的此类化合物。

At present, studies on and applications of chiral diamine s have been regarded as one of the most remarkable fields in catalytic asymmetric reactions.

手性二胺作为具有良好催化活性和对映选择性的手性配体或手性辅助剂，在多种催化不对称反应中已经得到广泛应用，并取到了很好的研究成果。

The asymmetrical Bragg reflection STD scan mode with the conventional X-ray diffraction rocking curve was used to determine the lattice distortion of CdZnTe single crystal in this method.

在高分辨X射线衍射仪上，利用不对称布拉格衍射STD技术与单晶摇摆曲线技术相结合的方法，对碲锌镉单晶材料的晶格畸变进行了分析测定。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。