查询词典 play an important role

Hydrolysis of 2,3-epoxy-butanol-p-methylbenzensulfonate (12) in acidic aqueous media gave chiral vicinal diol (2) in high enantioselectivity (95% ee).2. The chiral vicinal diol s play an important role in organic .

手性邻二醇在有机合成中具有重要的用途，它们是理想的手性合成砌块，可用于合成多种手性药物，许多含有手性邻二醇结构的药物或生物活性物质将有更重要的应用。

Product return and product disassembly play an important role in the remanufacturing system, so they are the main issues to be discussed in this thesis.

产品的回收和拆卸是再制造系统的重要环节，也是传统制造中所没有的课题。

Our results show that:the disbalance of Thl/Th2 caused by keratinocvte after UV exposure probably play an important role in the pathogenesis of potodermatitis. Of course, the further experiment is necessary.

为下一步工作提供理论和实验依据，照射后角质形成细胞产生细胞因子致T细胞亚群失衡与光敏性皮炎的相关性有待于进一步的体内外实验证实。

Symbiotic fungus from the nest play an important role in cellulose degradation, termite could obtain extrinsic cellulase for digesting the lignocellulose from food. The paper mainly compared the discrepance of cellulase activities from termites living different habit, and illustrated the secretion mechanism of cellulase in termite.

高等白蚁后肠缺乏原生动物，但其巢体上的共生真菌具丰富的纤维素酶，因此白蚁常通过取食巢体上的共生真菌来获得外源性纤维素酶，协助完成食物中纤维素的消化与吸收。

RESULTS: Stent materials play an important role in reducing inflammatory reaction and restenosis following stent implantation. As a medical material for humans, the features of stent should be meet the requirements of reliable distensibility, mechanical persistence, good flexibility and geometrical stability, possible small diameter, excellent blood compatibility, as well as good corrosion resistance. All of these depended on the mechanical and physical features of materials.

结果：支架材料的选择在减少机体炎症反应的强度和持续时间，减少支架置入后血管内再狭窄的发生起着重要的作用，作为人体医用材料，对支架各方面性能都提出了很高的要求，包括可靠的扩张性和力学持久性、良好的柔韧性和几何稳定性、尽可能小的外径，优异的血液相容性和耐蚀性，而支架上述特性都依赖于材料的力学和物理特性。

In many systems of permanent subsistence agriculture, domesticated animals play an important role.

在许多固定的自给农业系统中，家畜起着重要的作用。

Studies showed that dopamine receptors may play an important role in pathogenesis of PD.

研究表明多巴胺受体在PD的发病中起重要作用。

The optically active defect centers of such types as E', two kinds of oxygen-deficiency and some kinds of oxygen-richness in silica play an important role in optical communication fiber and UV absorption. The researches on some oxygen-deficient defects and the metal ions doped or implanted semiconductor nanoparticles with fine luminescence properties have made it possible for silica to be used in the lighting field.

氧化硅材料本征E'、2种缺氧型以及各种富氧型光活性缺陷中心在光导纤维及紫外吸收等应用中扮演了很重要的作用，某些具有良好发光性能的缺氧中心及掺杂离子或半导体纳米粒子发光中心的深入研究使氧化硅材料在照明领域具有良好的应用前景。

The land use data is the main geographical data and will play an important role in the control of agriculture nonpoint source pollution of HanBuhe Drainage Basin.

土地利用数据是进行流域农业面源污染治理的重要基础资料。

Tractor drawbar and noise test play an important role in theoretical study, performance analysis, quality appraisal of tractors.

拖拉机牵引和噪声试验是对拖拉机进行理论研究、性能分析以及对新产品作定型鉴定的最主要试验项目。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。