程度较大的

The most preferable substituents are methyl groups for positions R1 and/or R2, due to the existence of a hyperconjugation effect between the p z orbital of the central carbon atom and one of the C—H bond orbitals in methyl group.

当R1， R2位置是甲基时，由于碳原子的p z 轨道与甲基的一个C—H键轨道间存在强的超共轭效应，从而可以较大程度地降低α-氢转移反应的势垒。

That means that the abnormal return rate is mainly at the expense of illiquidity risk.

这表明：小公司的超额收益在很大程度上是由投资小公司时所承受较高的流动性风险造成的。

No fragments were amplified from some loci of EST-SSRs, which may suggest the loss of these loci in mirror carp genome or sequence divergence at the primer binding sites. These null alleles may result from selection because functional genes are under more selection pressure than non-encoding loci. Overall, population genetic variation is high for each of the five mirror carp, and the differentiations are also significant among populations.

3在与功能基因相关的多个微卫星基因座位上，扩增产物呈现不同程度的缺失现象，这些无效等位基因的产生可能与结构基因在育种中受到人工选择的影响较大有关。

The steam distillation method showed the best result which reduced the contents of the volatile cornpound to 38 percent of those in crude snake oil.This method reduced 60 to 100 percent of main odorous compounds,and retai...

结果表明水蒸汽蒸馏是效果最佳的脱腥方法，它可使蛇油挥发性成分的量降至脱腥前的38%，使腥味的主要成分减少60%~100%，同时较大程度地保留了多不饱和脂肪酸。

RESULTS: There were significant differences in capsular opacification occurrence rate and degree between group 1 and group 2. The difference was also associated with surgical methods and lens types.

结果：单纯摘除组与人工晶状体植入组，人工晶状体植入中，不同的手术方法及不同的人工晶状体类型其后囊膜混浊发生的频率及程度均存在较大差异。

The comparison of different area shows that by the influence of different policy, system and market opening equal human resource stock brings forth different effect.

本文通过不同地区的比较研究表明，同等的人力资源存量水平，受不同政策、制度、市场开放程度的影响，其发挥的作用必然存在较大差异。

The reaction barrier will be lowered by the substituents that delocalize the unpair electron in Pz orbital of the central carbon atom.

当R^1，R^2位置是甲基时，由于碳原子的pz轨道与甲基的一个C—H键轨道间存在强的超共轭效应，从而可以较大程度地降低α-氢转移反应的势垒。

The study found that home and hospital phototherapy were equally safe and effective, but patients treated at home reported a significantly lower burden of treatment and greater satisfaction with treatment.

这项研究发现，家庭光线疗法和医院光线疗法一样地安全和有效，但是据家中接受治疗的患者报道，他们具有明显较低的治疗负担和对治疗更大的满意程度。

On the normotensive rat, pretreatment with verapamil (0.25 ug/0.1 ul/site), the blocker of calcium channels, by microinjection into the rVLM bilaterally, not only caused a complete block effect on the elevation of BP, HR and the pressor response to defense stimulation by the subsequent microinjection of physostigmine, glucocorticoid or mineralocorticoid (the same dosage as mentioned above) into the same sites, but also led to a slight reduction on the basal cardiovascular activities to a certain extent.

四、在正常血压大鼠上预先用钙通道阻断剂维拉帕米(0.25μg/0.1μl/site)微量注射至双侧rVLM，不仅能阻断随后在同部位微量注射毒扁豆碱(0.4μg/0.1μl/site)、肾上腺糖、盐皮质激素(分别为40ng/0.1μl/site)所致的升压、加快心率、以及电刺激dPAG诱发的防御性升压反应，而且能引起上述指标不同程度的较弱的降低。

The creation and the making of our public-spirited ads have improved a lot, however, there still exists a gap in comparison with that of the developed countries in the world.

经过几十年的发展，我国公益广告创意和制作水平都有了很大程度的提高，但与世界上一些公益广告发展较早的国家相比，仍存在一定的差距。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。