查询词典 endomorphism ring

Solid Stellite disc, seat ring and backseat provide excellent long service life even in severe services.

实心钨铬钴合金阀瓣、阀座环和后座，即使在严酷的应用领域也能够保持较长的使用寿命。

The stereochemical studies of PPCs derived from the copolymerization of CO_2 with chiral PO at various conditions reveal that the polymer enantioselectivity is proportional to its head-to-tail linkages with regard to regioselective ring-opening of the epoxide.

通过研究聚碳酸酯的立体化学发现聚合物的对映体选择性与环氧丙烷区域选择性开环存在一定的影响作用。

In addition, higher enantioselectively was obtained when the groups on the oxazoline ring were less sterically demanding. That is, substrate will be closer to the backbone of ferrocene.

我们发现当恶唑啉上取代基立体位阻减小时我们发现当恶唑啉上取代基立体位阻减小时，产物的对映选择性就会相对较高，因而平面手性的影响很可能就是通过二茂铁非取代茂环和底物及亲核试剂之间的相互作用而产生的。

LY series desulfurizers are synthesized by sterically hindered fatty amine, ethylene oxide andpropylene oxide, which is a ring-splitting polymerization reaction at the catalysts.

采用带有空间位阻基团的脂肪胺在催化剂的作用下与环氧丙烷和环氧乙烷开环聚合，合成LY系列脱硫剂。

Ten cases which were first found showed regular oval shape, 4 of 5 recurred lesions appeared as irregular shape. On bone algorithm reconstruction of CT, 11 lesions revealed heterogenous "ground-glass like" mild hyperdensity or hyperdensity masses compared with brain tissue with cystic areas, stippled calfication was seen in 1 cases, the typical eggshell like bony capsule in 7 cases, 5 cases under it showed ring or arc hypodensity line.

CT表现：11例于骨窗上均呈密度不均匀的&磨玻璃&样略高密度或高密度肿块影，内部均可见大小不等的囊变区，1例伴点状更高密度钙化影，7例肿瘤周边可见特征性&蛋壳样&骨壳形成，其中5例于其内侧可见到环形或弧线形底密度影。

Calculation of wake field and couple impedance of RF cavity upgraded and old in Hefei electron storge ring.

合肥电子储存环上新旧高频腔的尾场及耦合阻抗的计算；。

Calyx tube subcylindric to campanulate, orifice 4-8 mm in diam., ring absent or present.

存在的芽苞叶；叶次脉弧曲，上部从中脉到边缘弄弯。

According to the actual ellipse ring diffuse rule of some submonition s fall points,a Monte Carlo model of calculating the DPR when the fire direction deviate the runway s axial direction is established and the damage efficiency of the runway with the change of fire d.

针对常规导弹对机场跑道打击效果的问题，根据某型子母弹实际落点的椭圆环散布规律，建立了射向与跑道主轴成一定夹角时跑道失效率的Monte Carlo模型。

The geometric optimization of C_(59)Sm and C_(60)Sm shows that the replacement of a C atom with a Sm in C_(60) yields a stable substitutionally doped fullerene C_(59)Sm, and among the five possible optimized geometries for C_(60)Sm, the most favorable exohedral sites are above the center of a hexagon and a pentagon ring.

替代掺杂富勒烯C_(59)Sm与外掺杂富勒烯C_(60)Sm几何结构与电子结构分析表明，以Sm原子取代C_(60)分子中的一个碳原子后碳笼仍保持稳定的替代结构，而对五种可能的C_(60)Sm结构，Sm原子倾向于栖息在六碳环与五碳环的空洞上方。

Basal nodes with a ring of gray-white silky hairs below and above sheath scar; culm sheath apically subtruncate, with a protuberance on one shoulder.

在鞘痕下面和高于鞘痕的基部的节具一枚灰白色的绢状的毛的戒指；竿箨顶部近截形，带有一个突起在一上扛着。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。