环

This is a study which is about the design of mechanism. Through researching fine properties and manufacturing process in any fields of carton fiber, we define the functions of the cricoid winding machine that: winding carton the cupreous line spreading the sheets along the axes of the core.

作为机械结构设计论文的本文最开始就通过对以往缠绕机的运动特点的分析，并且结合了当前最新的缠绕技术和各领域中应用加工工艺的要求，从而确定了本次所设计的立式环型缠绕机的工艺动作和路线，即环向缠绕的动作和路线。

Temporary cricoid pressurerelease during insertion allowed the device to be advanced tothe proper position.

使用环软骨施压妨碍喉罩插到合适的位置，插入喉罩时短暂的放环软骨压可以使得该装置位于合适位置的前端。

If the small flats on the gauge do not fit over the crimped ring, the ring is undercrimped.

如果内卡规上轻微的平面无法适配压紧环，则这个环没有实现正确压紧。

The epoxidation of propylene to propylene oxide, using cumene hydroperoxide as oxidant, molybdenum-glycol complex as catalyst and ethanol as solvent, has been investigated.

研究了以钼－醇配合物为催化剂，过氧化氢异丙苯为环氧化剂，乙醇为溶剂的丙烯一步氧化制环氧丙烷的反应。

Methodsafter total decompression of the spinal nerve through posterior medline approach, discectomy of the slipping segment was performed with a circular saw with diameter of 1.0 centmeter. under direct visualization through the hole of the circular saw, the disc tissue including cartilage of upper and lower end plates was removed with a long handle curette.

方法后正中入路脊髓神经根彻底减压后，用直径1.0 cm环锯摘除滑脱椎体间的椎间盘，然后通过环锯孔直视下彻底清除椎间盘髓核组织，用长柄刮匙刮除椎体上下终板软骨，使骨面成鱼鳞状。

We also obtain the expansion of the first Melnikov function for a system exhibiting a cuspidal loop.

对于一类具有尖点环的哈密顿系统给出了其在尖点环附近的一阶 Melnikov函数的展开式。

We study cuspidal loop bifurcation、 Homoclinic or double Homoclinic bifurcation、 Hopf bifurcation and obtain the necessary conditions to generate limit cycles by using the coefficients of the expansion of the first Melnikov function.

利用一阶Melnikov函数的展开式的系数研究了尖点环分支、同宿分支、双同宿分支和Hopf分支，并给出了产生极限环的充分条件。

Cyclodextrin is a cyclic compound of glucosan formed through cyclizatjon of starch and its relevant compounds under the working of starch enzyme in Baccillus macerans. It has great potentialities in food industry.

环糊精是利用一种细菌Bacillus macerans内的特殊淀粉酶，把淀粉和其有关化合物以环化结合而形成的环状聚葡萄糖化合物，在食品工业上有很大的应用潜力。

The present invention relates to the depolymering cyclization reaction of aromatic dithio ether polymer to prepare aromatic cyclic dithio ether compound under the presence of mercapto group containing compound and alkali matter.

本发明涉及利用芳香双硫醚聚合物的解聚成环反应来制备芳香双硫醚环状化合物的方法。该方法采用芳香双硫醚聚合物在含巯基的化合物和碱性物质存在的条件下发生解聚成环反应生成双硫醚环状化合物。

Prange first began to study cyclic codes over finite field in 1957 and Berkelamp first began to investigate negacyclic codes over finite field in 1968,but the codes over finite rings didnt received much attention until the 1990s due to the works of Nechaev in 1991 and Hammons in 1994,which showed that well-known nonlinear codes such as Kerdock and Preparata codes are constructed from linear codes over finite rings.

Prange(1957)和Berkelamp(1968)分别首先开始研究有限域上的循环码和负循环码，直到上世纪90年代，Nechaev(1991)和Hammons(1994)通过有限环上的线性码构造出著名的非线性码如Kerdock码和Preparata码，有限环上的码才受到广泛关注。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。