1. According to the H NMRstudy, it was found that the protons on the cyclopentadienyl ring of 〓 were not splitted, but when one proton on the cyclopentadienylring was substituted by methyl, that is in〓 complexes, thefour protons on the ring were splitted into four groups, the 〓 between the onesignal and the others is large, the total splitting is over 2ppm. The splittings werealso affected by the halides linked with the titanium, they increase according to theorder of CI, Br, I. By the study of the 〓 Sn NMR, it is found that the chemicalshifts of 〓 are present in low field. It is assume that the large space strain causesthe angles of the tin linked with ligands deviate from the normal tetrahedral anglesresults low field shift for 〓Sn. And by MS study, there were no molecular ions for 〓 complexes in the spectra. However, for 〓 when X=CI, Br, NCO and Ar is tolyl or phenyl group, there were molecular ions, but theirabundances were very small, and no that for the iodide was found.
钛上的卤素对茂环氢的裂分也有影响,依〓,Br,I顺序,卤素对茂环氢的裂分依次加大;通过对〓的研究发现,以上这些化合物〓的化学位移都出现在低场,认为大的空间张力造成的锡的键角偏离正常的锡的四面体键角是造成〓化学位移出现在低场的原因;对这些化合物质谱的研究发现,〓系列化合物得不到分子离子峰,而〓系列的化合物,当X=〓,NCO和苯环上不带取代基或只带甲基时,则出现分子离子峰,但丰度很低,而相应的碘化物和其它化合物则没出现分子离子峰。
2. 公共查询·英语单词
2. Chromosome numbers which deviate from the normal number of chromosomes for a species are said to be heteroploid.
偏离了一个物种的整个染色体数目的叫做导倍体。
3. danci.edu.pub
3. The record is taken a photograph of in the uniqueness with distinctness of development orbit of China, made a general survey of the record and photographed in initial staging, the paces in China had difficulty moving about, had a history of more than 100 years to introduce since the 20th century to China to photograph, but real documentary photography of meaning frank to deviate from normal central line of the main channel of development go on slowly, in this course of slow development, it is some reasons that cause the record to photograph and is in a scattered one for a long time, subconscious, under the form of the simple record.
纪实摄影在中国的发展轨迹具有鲜明的独特性,纵观纪实摄影初期在中国的步伐步履维艰,摄影自20世纪传入中国已经有一百多年的历史,但真正意义的纪实摄影的一直在偏离正常发展的主航道缓慢进行,在这个缓慢发展的过程,是什么原因导致纪实摄影长时间处于一个零散的,下意识的,简单记录的形态下。
4. The simulation result of a continuous stirred tank reactor (CSTR) shows that the data would deviate from normal distribution under parametric uncertainty, and different parameters have distinct effect on data distribution at the same uncertain degree.
连续搅拌釜的仿真结果表明,在参数不确定的情况下,数据会偏离正态分布,且在相同的不确定条件下,不同的参数对最终数据的分布影响也不同。
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5. Due to the power interventions, there are excess and speculative demands on the international markets, which cause the oil price fluctuation to deviate from normal supply and demand relations and result in a prolongation of the cycle of oil price fluctuations.
由于权力的介入,国际市场存在着超额需求和投机需求,从而使油价波动偏离正常的供求关系,波动周期也大大延长。
6. The results show that with the presence of vertical stratification, the vertical structures of Rossby waves deviate from the normal sine or cosine waves.
结果表明:海洋垂直方向上层结的存在使Rossby波的垂直结构偏离了正规的正弦或余弦曲线。
7. Outlier refers to these objects that do not accorded with the general rule of the normal data or deviate from the normal data. Their generation mechanism is completely different compared with the normal object, but they may contain very important information that we always neglected.
离群点是指数据集中和常规数据对象的产生机制完全不同的,不符合数据的一般规律,偏离常规数据对象的数据点,但是它们又可能包含着我们容易忽略的非常重要的信息。
8. Objective By the analysis of the BSID clinical test, to know about, in the child-care outpatient service, the childre''s body and mind development condition, the deviate extent from normal, the reason and the intervention measure.
目的通过分析BSID临床测试结果,了解儿保门诊中儿童身心发展状况以及偏离正常范围程度、发生原因及干预措施。