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On the basis of field work and flora analysis, this paper has chiefly discussed the characteristics of Helan mountain flora. The results show: 1. The plant species are comparatively rich, for there are 678 species of spermatophytes in Helan mountain area, belonging to 314 genera, 71 families. Among the 314 genera there are 16 monotypic, 17 oligotypic and 5 chinese endemic ones.

本文通过贺兰山植物区系的分析，指出该区系的主要特征是：植物种类相对丰富；地理成分复杂多样，并且有明显的过渡性；区系内部的地区性差异很大；除少数为古老类群外，多数是发生较晚的年轻类群；整个区系显示有较大的脆弱性。

Because of the high cost of permanent magnet, optimizing for brushless DC motor design is an inevitable choice, which is a comparatively mature and multiplicate technique after these years developing.

因为永磁材料的成本较高，所以对无刷直流电动机进行优化就成了必然的选择，无刷直流电动机的优化发展至今，已经是一项比较成熟的技术，优化方法也多种多样，各有优异。

Relevance theory is comparatively complicated due to its nonconventional view on communication and context.

第一章简要介绍了认知语言学的基本概念和关联理论，并分析了其在翻译中的应用价值。

In the electricity market environment, the operation of areal subsystems is comparatively independent and the parameters of a subsystem are relatively nontransparent to other subsystems.

在电力市场条件下，区域子系统运行具有相对的独立性、系统数据具有一定的不透明性。

Effects on reproductive performance: The normal delivery of group B,C and D were 80%、93.33%、93.33%,respectively,were improved by a certain extent comparing with the control group; The mean birth weight of calves were not significantly different between the trial and control groups.But numerical datas shown that supplementing Zn-Met in dietary had the tendency to increase the birth weight of calves; Supplementing Zn-Met in dietary can make dairy cows express empathema earlier,and significantly(P.05).Among the trial groups,the advanced extent of the group C was comparatively large(5.8d);The oestrous cycles were all in normal range and not significantly different; The levels of serum PRL of group B,C and D were significantly(P.05) 1.46 ng/ml、3.08 ng/ml、3.45 ng/ml higher than the group A.

对繁殖性能的影响：添加蛋氨酸锌组的正常分娩率为80％、93.33％、93.33％，较对照组(73.33％)有一定程度的改善；试验组犊牛初生重与对照组犊牛初生重差异不显著(P＞0.05)，但数据结果显示，日粮添加蛋氨酸锌有使犊牛初生重增加的趋势；日粮添加蛋氨酸锌可使奶牛产后发情提前，且差异显著(P＜0.05)，其中，添加蛋氨酸锌240mg／kg组提前的幅度较大，提前了5.8d；试验组发情周期与对照组差异不显著(P＞0.05)，均在正常范围之内；B、C、D组血清促乳素含量均比对照组高，且差异显著(P＜0.05)，依次增加1.46ng／ml、3.08ng／ml、3.45ng／ml，试验组B与C、D两组间也达到显著差异(P＜0.05)。

Recent developments of clean oxidation systems catalyzed by polyoxometalates are summarized in detail. The emphasis is on the epoxidation reaction of olefinic compounds, oxidation of alkanes and aromatic compounds with the comparatively ideal oxidants, hydrogen peroxide and molecular oxygen respectively.

文本总结了多金属氧酸盐在液相清洁催化氧化方面的进展，主要针对以过氧化氢和分子氧为氧化剂的烯烃类化合物的环氧化反应、烷烃和芳香族化合物的氧化反应，并详细探讨了此类氧化反应的反应机理。

Recent developments of clean oxidation systems catalyzed by polyoxometalates are summarized in detail. The emphasis is on the epoxidation reaction of olefinic compounds, oxidation of alkanes and aromatic compounds with the comparatively ideal oxidants, hydrogen peroxide and molecular oxygen respectively. The oxidation mechanisms are elucidated in detail.

文本总结了多金属氧酸盐在液相清洁催化氧化方面的进展，主要针对以过氧化氢和分子氧为氧化剂的烯烃类化合物的环氧化反应、烷烃和芳香族化合物的氧化反应，并详细探讨了此类氧化反应的反应机理。

It is extremely necessary to find an ideal filling material for the treatment of benign bone defect, particularly those benign osteolytic defect in children with a comparatively large cavity.

为寻找良性骨缺损理想的充填材料，特别是修复儿童良性溶骨性较大的骨缺损，采用天然型无机骨充填良性溶骨性骨缺损5例，其中骨囊肿3例，纤维异样增殖症1例，非骨化性纤维瘤1例。

Since for all the overeducated graduates, 36% of which are apparently overeducated that they are satisfied with their current jobs and with comparatively low human capital, and can be separated away from mismatch.

但由于在所有毕业生中有36%的学生属于&显然过度教育&，因此可以从过度教育人群中划出。

The surface structure of human and ribbit oviductal epithelia was studied comparatively under SEM.

现有关于哺乳动物输卵管粘膜上皮表面结构和功能的文献11一5J中，罕见同年龄不同动物、同动物不同年龄的比较研究资料。

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。