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Our country has a large population but the cultivable land is comparatively limited.

城市建设首先需要大量的土地，过去在计划经济的年代，只要办&征地&手续就可以。

Through the principal components analysis of 27softwoods,we found that the directionality of cell arrangements was accordant with theevolution order of Ginkgoaceae,Pinaceae,Taxodiaceae,Cupressaceae,the more evolutivewood species,the stronger directionality of cell arrangements along radial,but thedirectionality of cell arrangement along the radial of Larix spp.which was abrupt changedspecies was comparatively weak.

通过对27种针叶材的主成分分析，发现木材细胞排列方向性强弱基本符合银杏、松科、杉科、柏科的进化顺序，越是进化的树种木材径向排列的方向性就越强。另外，落叶松属等早晚材急变的木材径向排列比较弱。

Deceivingly narrower and shorter than the big domestics, Cadillac Escalade and Lincoln Navigator, comparatively diminutive GL counts the Audi Q7, Infiniti QX56, Land Rover LR3 (which will soon become the LR4) and Lexus LX 570 as its chief rivals.

Deceivingly变窄，短于大佣人，凯迪拉克和林肯Navigator ，比较小冰川罪状奥迪Q7 ，英菲尼迪QX56 ，陆虎LR3 （不久将成为LR4 ）和凌志570勒克斯作为其主要竞争对手。

Deferrizers and demaganizers are series of products designed by our company for underground water with comparatively high iron and managanese content according to aerating oxidation priciple.in these prducts,packed natural manganese sand in filter is applied as filtering materials,and oxygen in air is applied as oxidants,to make ferrous iron in water oxidized into ferric iron, in a same time, oxidation reaction makes its produced its produced substances left in filtering materials for purposes of deferrization and deman-ganization.

除铁锰装置是我公司针对铁、锰较高的地下水，按曝气氧化法的原理而设计的系列产品，它是利用过滤器内装填城然锰砂为滤料，利用空气中的氧化剂，使水中的二价铁，同时发生氧化反应使其物进截留在滤料中，从而达到除，除锰的目的。

Problems stand out in that there is low learning efficiency in study of students at large and the pattern of the course design, teaching approach, and education evaluation method are comparatively demoded With the coming of the information age, historic changes in both life style and learning style are highlighted.

近几年来，对人类学习活动的研究虽然已经发展成为当今世界多学科交叉的前沿课题，但多数研究成果尚未引入教育理论与实践中来，教育行政部门、学校和教师几乎没有考虑如何通过培养来提高学生的学习能力，致使目前学习方式与课程、教学、教育评价模式都比较落后，学生学习效率普遍比较低，无法适应时代的要求，这种状况在我国表现得很突出。

Objective To comparatively analyze HIV-antibody and biochemical detection results before and after serum samples were treated with heat-inactivation at 50℃ for 30 minutes and at 60℃ for 20 minutes. Methods 297 healthy individuals and 25 patients with positive HIV-antibody who were confirmed by HIV/AIDS confirmatory laboratory were involved into this study. Their blood samples were collected into three vacuum and desiccative tubes.

职业暴露感染，主要是指医疗器具不洁，造成接受医疗服务者感染HIV，其中也包括医务人员在提供医疗服务时，不慎被污染HIV的器具如针头、锐器等刺伤皮肤，或黏膜、破损的皮肤直接接触到含有HIV的体液，而被感染。

The result of study on the apparent kinetics of photochlorination of acetic acid showed that the reaction rate is comparatively slow and the byproduct of dichloroacetic acid is created during the reaction. In order to put the technology of photochlorination of acetic acid into industrialization, the new technology about distillation column with a single reactor having a large reactive potency must be adapted.

由乙酸光氯化反应宏观动力学研究结果可见，反应速度相对较慢，且生成二氯乙酸副产品，为了乙酸光氯化工艺实现工业化，必须采用具有较大反应能力的反应与精馏耦合工艺。

The article selects the most discussable part to study comparatively.

而船舶优先权是船舶物权中争议最多的领域，故笔者采用比较的方法分析研究，以船舶优先权为主线，从船舶优先权与船舶抵押权和船舶留置权的对比中更深入地对船舶优先权从多角度浅作探讨，并提出自己的若干观点或建议，同时希望能起到抛砖引玉的效果。

Chapter 4 includes an overall analysis of the scale and regional distribution of the backflow and it is found that although the scale has been expanding, yet it is distributed disproportionably among different regions, specifically the East China occupying a comparatively larger percentage while the middle and west areas only a small proportion, and the unbalanced distribution has not changed much even after the reform in the tuition system and the implementation of Enrollment Expansion Policy.

分析结果表明，我国高等教育人才对农村的回流规模是不断扩大的，但是高等教育人才回流在地区之间的分布是不均衡的。东部地区占有了相对较多的回流人才，中西部地区较少。高等教育收费改革和扩招以后，人才对农村的回流率不断提高，回流规模继续扩大，但回流人才在地区之间的分布特征基本没有改变。

But because the complicated influence of accounting environment and social factor, accounting information becomes a kind of comparatively general economic phenomenon and very outstanding social concern distortedly.

然而由于复杂的会计环境与社会性因素的影响，会计信息失真成为一种较为普遍的经济现象和十分突出的社会问题。

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。