工作条件

What he learned in college has set the stage for his future career.

他在大学里所学的知识为将来的工作创造了条件。

For the annual investigation and design of regeneration and silviculture, conforming the

地条件。林业局森林调查设计队负责林业局每年更新造林作业的调查和设计工作，确定造林地

Each of these parts is a simple machine with a special job to do .

这些部分是简单的机器用一种定位条件工作来执每个人。

For the capacity of propeller turbine is often small, people pay little importance on the transformation of reducing capacity under specified conditions. So, nowadays little research mentioned above has been developed.For the particularity of the designed factors, the author has improved the traditional theory, and has fined an available Method of singular point distribution. At present, no one has developed CAD hydraulic design software of lower specific speed axial flow runner in our country.

由于设计条件的特殊性，在研究设计方法过程中，论文基于传统设计理论，对引用的一些基本规律做了一定改进，在具体设计过程中，对经验参数的选择方法做了一定探索，研究与探索运用奇点分布法设计低比转速轴流式转轮叶片；传统的设计工作全部由人工完成，无法满足当今社会科技生产发展的需要，因此论文开发了一套具有人机对话界面良好特点的低比转速轴流式转轮CAD软件。

Self graduates to sit for the national graduate entrance examination unity; Self graduates must work for two years before they can apply for graduate students, some schools on the basis of these conditions must be coupled with the adoption of Self trunk undergraduate courses, Some schools are not part of professional recruiting college graduates.

自考本科毕业生可报考全国硕士研究生统一招生考试；自考专科毕业生必须工作两年后才可报考研究生，有的学校在此条件的基础上加上必须通过自考本科主干课程的规定，有的学校规定部分专业不招收大专毕业生。

By getting over the state of the art about the technique of the tailrace tunnel with sloping ceiling, the research contents and study ways and means are put forward, and the importance to research is explained.

第二章：主要论述了变顶高尾水洞的工作原理、体型设计和适用条件以及过渡过程计算的数值计算模型，重点在于数学模型的建立与分析，明满流交替现象中选择了合理的计算模型和计算方法；第三章：着重介绍了向家坝变顶高尾水洞方案模型试验的研究内容和主要结果。

By getting over the state of the art about the technique of the tailrace tunnel with sloping ceiling, the research contents and study ways and means are put forward, and the importance to research is explained.Chapter 2 introduces the working principle of the tailrace tunnel with sloping ceiling. And the design of body type, appliance condition and the numerical model for transient process are illuminated.

第二章：主要论述了变顶高尾水洞的工作原理、体型设计和适用条件以及过渡过程计算的数值计算模型，重点在于数学模型的建立与分析，明满流交替现象中选择了合理的计算模型和计算方法；第三章：着重介绍了向家坝变顶高尾水洞方案模型试验的研究内容和主要结果。

To all project practicality, the introduction is given to the operational characteristics, the methods for calculation and the researching actuality of the tail tunnels with sloping ceiling underground hydropower stations the Three Gorges. This paper has discussed in detail the characteristic method being the same with the compressive flow and the Priessmann solution being the same with the free-surface-pressure flow. And how to deal with boundary conditions has been expatiated. Also hydraulic transient process of tremendous load fluctuation in the tail tunnels with sloping ceiling has been numerical simulated and the Fortran program for numerical simulation has been given. The paper gain the maximal press for tail end of the shell, the maximal rising rate of rotational speed of generating set, the maximal vacuum degree for inlet of the tail tunnels and so on under 11 kinds conditions of tremendous load fluctuation. These conditions include the design conditions, the check conditions and the superposition conditions. Finally, the computing results have been analyzed and summarized. The end chapter is the general comment of the whole-length content and the describing of the intending view of researching.

本文以三峡右岸地下电站尾水洞设计为背景，从工程实际出发，阐述了变顶高尾水洞的工作特性、使用范围及其研究现状；详细论述了适用有压流的特征线法、适用明满交替流的普里斯曼解法等数学模型；边界条件的给定和明满交替流的计算方法；用Fonran语言编制了数值计算程序，对三峡右岸地下电站变顶高尾水洞的大波动工况进行了数值模拟，分别得出了在设计工况、校核工况和叠加工况下蜗壳末端最大压力上升值、机组最大转速上升值和尾水管进口最大真空度等重要参数；对数值计算结果进行了详细分析并得出了有价值的结论；最后展望了今后水电站变顶高尾水洞的研究方向。

The experimental conditions for measurement on the content of aluminium, calcium, magnesium, manganese, phosphor, silicon and titanium using ICP-AES method according to GB/T6730.63—2006 have been tested and analyzed. In the experiments the iron ore sample is decomposed and extracted using sodium carbonate/sodium tetraborate with proper acidity as the flux and then a working curve is drawn up using extremely pure ferric oxide (F2O3) as the primitive. And in the end the correlation coefficient r attains to 0.999 and above.

试验ICP-AES法测定铁矿石中铝、钙、镁、锰、磷、硅和钛国家标准方法GB/T6730.63－2006的实验条件，用碳酸钠/四硼酸钠作熔剂分解铁矿石样品，适当的酸度浸取，以高纯三氧化二铁打底作工作曲线，相关系数r达0.999以上。

With the rapid development of science and technology, library automation management software and hardware required for the conditions are ripe.

随着科学技术的迅猛发展，图书馆管理工作的自动化所需的软硬件条件已经成熟。

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。