查询词典 ring

For larger hernial ring, abdominal transverse fascia weak serious, while the best improvement Kugel, which chooses to use plain film while the relapse rate will be higher.

对于疝环较大，腹横筋膜薄弱严重的，则以改良kugel效果最好，这种情况如选用平片则复发率会较高。

The new approach through internal inguinal ring to prepritoneal space to manage hernia sag and placed Kugel patch to treat inguinal hernias make the operation more simple and safer.

结论Kugel修补术治疗腹股沟疝集中了开放手术和腔镜手术的优点，经内环入路放置Kugel补片使操作更为安全和简便，值得推广。

The adsorption orientation of artemisinin on silver was deduced according to the change of 1756 cm-1 lactonic ring vibration and the frequency shift of 724 cm-1 peroxide group vibration.

根据1756cm^-^1谱带的变化以及724cm^-^1过氧基团振动频率的位移，对青蒿素在银表面上的吸附取向进行了研究。

Lactonization of 32 swiftly took place under basic condition, and the first four-ring intermediate 53 was gained.

以动力学烯醇化-氧化的方法，在18的〓位引入了〓羟基，解决了构成1，4-内酯环的相对立体化学问题。32在碱性条件下，顺利完成了1，4-内酯环的构筑，首次获得了四环中间体53。

Based on our intensive studies on the lactonization of oligo/polysialic acids, we proposed for the first time that the lactone-ring formation of oligo/polysialic acids has three stages. We also provided a novel model to explain the conformational changes of oligo/polysialic acids caused by the repulsing forces among the carboxyl groups of sialic acid residues. Our results should provide novel approaches for further investigation of the structural-functional relationships of oligo/polysialic acids.

在对多/寡聚唾液酸内酯化过程进行深入研究的基础上，于国际上率先提出多/寡聚唾液酸内酯的形成具有三个阶段的观点，并首创性地提出了羧基排斥所致多/寡聚唾液酸分子空间构象改变的模型，为深入研究多/寡聚唾液酸结构与功能的关系提供了新生长点。

The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.

第一条路线首先从1，2，4-三甲氧基苯出发与卤乙腈作用合成卤代芳酮中间体，然后与罂粟碱反应合成开链片螺素，最后经乙酰化、去保护、成内酯环得到片螺素；第二条路线由制备的芳醛和制备的硝基乙酸乙酯经缩合得到2-硝基-3-芳基丙烯酸乙酯，然后由该中间体与罂粟碱反应，在完成关环的同时也引入酯基，最后去保护、成内酯环得到片螺素；第三条路线是由香豆素或茚二酮出发，经溴代后的中间体与罂粟碱反应，得到片螺素的基本框架。

At present cable industry leading products are Lasi Ta round of the types of tungsten carbide, steel ring, ceramics La Sita round, guided round of spraying line extension and porcelain kettle spray WC.

目前主导产品是线缆行业的各类碳化钨拉丝塔轮、钢圈、陶瓷拉丝塔轮，导轮喷瓷及伸线釜喷碳化钨。

The forward and reverse lockpin synchronizer and the great capacity of synchronizer ring is which realize the smoothness , flexibility and reliability when shifting .

前进档、倒档全部采用锁销式同步器，齿环同步容量大，实现换档平顺、灵活、可靠。

Frodo and the Ring are in the gravest peril from the Balrog, and even Lorien's Elves wouldn't be able to protect him.

佛多和魔戒都受到了来自炎魔的巨大的威胁，而且即使是洛林的精灵也无力保护他。

Celeborn also perceives the doubt and confusion in Aragorn, when it is time for the Fellowship to depart from Lorien, and therefore Celeborn gives Aragorn some extra time to think by providing the Company of the Ring with boats.

当护戒队要离开洛林的时候，凯勒鹏还察觉到了阿拉贡内心的疑虑，因此他给护戒队员们提供船只做为交通工具，这使得阿拉贡会有多一些的时候来思考。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。