查询词典 ring axioms

In addition, we obtain the following results:(1) A ring R is weakly unit-regular if and only if so is the n×n matrix ring Mn of R for any n≥1;(2) Let R be a ring such that R/J is regular.

另外，我们还证明了下面两个结果：(1)环R是弱幺正则的当且仅当Mn(n≥1)是弱幺正则环；(2)假设R是一个环且使得R/J是正则环。

The author determines necessary and sufficient conditions for a forinal triangular matrix ring to be V-ring or semi- V-ring.

给出了形式三角矩阵环 R 是V-环或半 V-环的充要条件。同时

In order to enhance wear-resisting performance of the internal combustion engine piston ring,matrix microstructure and radial elastic force of the piston ring,the matching between piston ring and cylinder were analyzed.

为提高内燃机活塞环的耐磨性能，分析了活塞环的基体组织、径向弹力及活塞环与气缸套的匹配状况对其耐磨性的影响。试验表明活塞环的基体组织以细粒状珠光体或回火索氏体、石墨呈细小均匀分布为佳；活塞环的径向弹力大小应适宜，一般为

Two ring structures(a five- membered ring and a six membered ring) were formed simultaneously.

并相应地形成了六元环和五元环结构。

They are apply to the flat grinding and polishing of different materials and machinery such as sealing ring of mechancial seal,ceramic microsection, steam-cylinder piston ring, oil pump vane carborundum, silicon nitride,quartz crystal, kentanium ring,graphite, gem, tonsorial knife, shaver knife, auto oil pump sealing element, air flap, metal material, project plastic, etc..

公司主要生产双面研磨与抛光机。本公司引进先进的生产设备和质量检测设备，从原料的购入、生产、检测、销售全过程管理均采用严格的质量标准。公司从创建伊始即以稳定可靠的产品质量，高效科学的管理，诚信优质的服务深受业内关注。

Cassini imaging scientists analyzing images acquired over the course of about 600 days found the tiny moonlet, half a kilometer across, embedded within a partial ring, or ring arc, previously found by Cassini in Saturn's tenuous G ring.

卡西尼小组的成像科学家在分析了600多天来获取的图像时发现了这一小卫星，直径约1公里，镶嵌在一段环弧中。这段环弧是由卡西尼飞船早先在土星纤细的 G 环中发现的。

objective: value the no tention hernia ring padding neoplasty in treating inguinal hermia.method: retrospectively analysize the clinical data of the no tention hernia ring padding neoplasty.result:the average time of the neoplasty is 40 minutes,the patients can make out-of-bed activity ,whom were treated after 6 hours.all of the patients were free of infection.2 patients felt foreign body sensation in inguinal groove and 1 person felt benumbed.conclusion: no tention hernia ring padding neoplasty is a valuable type of neoplasty,which operates simply,and the patients can get little injury ,rapid recovery and low relapse rate.

目的：探讨无张力疝环填充式修补术在腹股沟疝手术中的应用价值。方法：对30例腹股沟疝患者行无张力疝环填充式修补术后的临床资料进行回顾性分析。结果：手术时间平均40 min，切口疼痛2 d～7 d，术后6 h下床活动，无感染病例，腹股沟异物感2例，麻木1例。结论：疝环填充式无张力修补术是一项更符合生理解剖结构的治疗技术，操作简单，损伤小，恢复快，复发率低。

The following statements are proved:. A is equivalent to a diagonal matrix if and only if A is similar to a diagonal matrix.. If R is an APT ring, then A can be uniquely diagonalized as diag{e1,..., en} and ei divides ei+1.. R is an APT ring if and only if R/I is an APT ring, where I is a nilpotent ideal of R.

本文证明了以下结果：A相抵于一对角阵当且仅当A相似于一对角阵；若R是一APT环，则A在相似变换之下可唯一地化为对角形diag{e1，…，en｝，这里ei整除ei+1；R是APT环当且仅当R/I是APT环，这里I是环R的一幂零理想。

One type of nose ring is the captive bead ring with a bead at the center and secured by the tension of the ring.

一个环型的鼻子是用珠为中心的圈养珠环和环的紧张担保。

The port which connects the outgoing primary ring and the incoming secondary ring of the FDDI dual ring.

连接FDDI双环中的出局主环和入局辅环。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。