查询词典 yieldings
- 与 yieldings 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
According to the guideine of the project, I put the theory into practice, summarise the experience timely and accumulate research yieldings of each phase .
在课题研究总体方案指导下,边实践、边总结,重视积累阶段性的成果,滚动式推进课题的研究。
-
We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS、NMR、FT-IR etc.
中文摘要我们已合成出一系列在联吡啶的4,4′位置有两个氟化烷基侧链的联吡啶配位基[4,4′-bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c)及C10F21(1d)],经由亲核取代反应,由4,4′-bis-2,2′-bipyridine反应而得,并具有不错的产率,其纯化也简易可行,所合成之产物并可用GC-MASS、NMR、FT-IR鉴定其化学结构。
- 推荐网络例句
-
Finally it offers the analysis of the fault-tolerance system as well as its test verification.
这样,运行于空间环境中的系统的设计目标就是在保证系统实时性
-
However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.
然而,仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质,这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的,大多数的研究。
-
By east-west into the western mountain front or in Landrace, Xing'an Mountain front to forest-steppe sub-zone and Songnen plain black or plain meadow steppe chernozem Songnen sub-regions.
按东西向分为西部山前台地或长白、兴安山前台地森林草原黑土亚区和松嫩平原或松嫩平原草甸草原黑钙土亚区。