查询词典 token ring

Nitratomethyl-3-ethyloxetane was synthesized by the process of cyclization, nitation from trimethlolpropane and diethyl carbonate, and the homopolymer of 3-nitratomethyl-3-ethyloxetane was synthesized with 1,4-butanediol as initator and boron trifluoride etherate as an catalyst by cationic ring-opening polymerization.

以三羟-甲基丙烷和碳酸二乙酯为原料经环化、硝化两步反应合成了化合物3-硝酸酯甲基－3-乙基氧丁环；采用1，4-丁二醇为引发剂，三氟化硼乙醚(BF3Et2O)为催化剂，NIMEO发生阳离子开环聚合得到一种端羟硝酸酯均聚醚PNIMEO。

In the beginning was the ring (really more of an electronic trill or beep)-- dull, yet serviceable, using only one tone track; and with it came the single-line melody -- not much of a choice.

在当初环(实际上更多的是一个电子颤音或响铃)--平淡，但耐用，只用一个声调轨道；有了它来到单线旋律--没有太大的选择。

With the mass production of rubber lock ring,the demands of rubber forming automatic trimmer is growing rapidly.

随着橡胶密封圈的大批量生产，对橡胶成形件自动修剪机的需求也跟着扩大。

Either in binomial or in trinomial regression, the regression coefficient reached the significant correlation at 0.01 levels, which means the growth ring age has intense influence on the microfibril angle.

枫杨微纤丝角与生长轮年龄的关系无论是进行二项式回归还是三项式回归，回归曲线拟合性都很强，复相关系数都达到0.01的极显著水平，表明微纤丝角受生长轮年龄的影响十分强烈。

In the meanwhile, we also found that compounds being connected by OXD rings, electronic coupling between the ferrocene and triphenyl amine could be prevented by using OXD ring as connecting unit.

同时，我们也发现，化合物若以OXD环为连接基团，不但可以阻隔二茂铁单元和三苯基胺单元的偶合作用，使得分子可以利用电化学的方法形成电聚膜。

And we obtain a necessary and sufficient condition for a trivial extension to be semicommutative ring.

得到平凡扩张是半交换环的一个充要条件。

Chapter 4 deals with the three-unit ring network with self-feedback.We mainly focus on the bifurcation phenomena near the trivial solution.

在第四章中，我们主要讨论带自反馈的3元环状神经网络系统的平凡解对应超越特征方程的正实部根个数的变化规律以及该系统在平凡解附近的分岔性质。

Finally,for the n-unit ring network, by means of space decomposition,we establish sufficient conditions on the stability of the trivial solution and also consider the existence and stability of nontrivial equilibria.

最后，对n元环状神经网络系统，我们利用空间分解的方法讨论了平凡解稳定的充分条件以及该系统非零平衡解的存在性与稳定性。

In this thesis,we first consider the stability of the trivial solution to a three-unit ring network with multiple delays and without self-feedback.Most impor-tantly,we know how the number of the eigenvalues with positive real parts changes,which is fundamental for the discussion of bifurcation.

本文首先讨论了具多个时滞的不带自反馈的3元环状神经网络系统平凡解的稳定性，并得到了平凡解对应特征方程正实部根个数的变化规律。

Results Apart from100%of delineating of the four rectus muscles,optic nerve and lacrinal gland,CT was able to depict not only about50%of oblique muscle,superior ophthalmic vein,ophthalmic artery and the trochlea,but also musculotendinous ring,aterior ethˉmoidal artery,posterior ethmoidal artery,medial and lateral long posterior ciliar artery,central retinal artery,inferior ophˉthalmic vein,supraorbital nerve,lacrimal sac,nasolacimal duct etc.

结果 眼眶水平CT断层扫描除对4条直肌、视神经、泪腺100%显示外，上斜肌、眼上静脉、眼动脉、滑车的显示率在近半数。另外，肌腱环、筛前筛后动脉、内外侧睫状后长动脉、视网膜中央动脉、眼下静脉、肌支动脉、眶上神经、泪囊、鼻泪管等也可显示。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。