化为

In this thesis, several problems of time-dependent systems in various branches of physics are investigated by making use of the generalized invariant theory and the invariant-related unitary transformation formulation. The problems are given as follows:(1) Spin model and geometric phase factor in the fiber We investigate the fiber experiment performed by Chiao-Tomita and the Chiao-Wu theory concerning the geometric phase factor in the optical fiber, and then show that the investigation of the propagation of photons inside the noncoplanar optical fiber can be regarded as that of a second-quantization spin model.

本论文用推广的不变量理论和与不变量有关的幺正变换方法研究了一些物理分支中的几个含时系统问题：(1)自旋模型与光纤中光子几何相因子问题重新考察了Chiao-Tomita光纤实验和Chiao-Wu关于光纤中光子几何相因子的理论，证明了在非共面弯曲光纤中传播的光子运动问题实际上可以化为二次量子化含时自旋模型研究。

It does not consume expensive oxidizing chemicals, the catalyst is nonhazardous and inexpensive. The method is simple and high efficient, which generally achieve complete mineralization of organic pollutants in water to such inorganics as CO〓 and H〓O.

它不需要昂贵的氧化剂，催化剂无毒价廉，方法简单，通常能将水中的有机物氧化为CO〓和H〓O〓等简单无机物。

As usual, a nonreference type parameter is initialized as a copy of its corresponding argument.

一般来说，非引用类型的形参会初始化为其相应实参的副本。

In 2004, green building comprised approximately two percent of the new US "nonresidential" construction market, which translates to approximately a $3.3 billion industry.

2004年，绿色建筑大约占美国新建&非居住性&建筑市场的2%，大约转化为33亿美元的行业。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.In addition,the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method,consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

With reference to relevant experience both from home and abroad, diversified source of capital should be introduced to invest in urban infrastructure construction. Besides government fund,the infrastructure financing channel should be expanded and social capital should be attracted to take part in urban infrastructure construction. Meantime, current infrastructure operating approach should be altered to improve investment efficiency of government"s fund .In addition , sources of capital and their application should be standardized as well. Generally speaking, ideas in the article could be concluded as "market-based operation, socialized investment, plural debt, direct financing, limited withdraw of government and positive intervene of private capital. The article also put forward six measures to make all the ideas and suggestions operatable.

本文在对浙江省城市基础设施投融资现状和体制情况进行分析的基础上，根据公共产品理论、项目区分理论、基础设施可销售性评估等理论，借鉴国内外的相关经验，提出了建立高效的浙江省城市基础设施投融资体制的建议和对策，即以投资多元化、服务社会化、发展产业化、运营市场化为导向，调动可利用的资金用于城市基础设施投资，规范资金的来源和使用，改变基础设施经营方式，提高政府资金的使用效率，吸引社会资金参与城市基础设施建设，拓展城市基础设施融资渠道，实现&市场化运作、社会化投入、多元负债、直接融资，政府有限退出、民资积极介入&，实现&以城养城&的发展模式，并提出了六个方面的具体对策和措施。

This paper puts forward, in the point, gravimetric geoid method, geometric geoid method and synthesis method to transform ellipsoid height into orthometric height.

基于此，扼要提出应用重力大地水准面法、几何大地水准面法和综合法将GPS椭球高改化为正高的方法。

tissue engineering ; osseocartilaginous ; adipose-derived stem cells

近年来，学者们在多个物种的脂肪组织中发现具有多向分化潜能的成纤维细胞样细胞，在体外特定的诱导条件下可以分化为

Stubborn stand by, in many Qiqiaiai days are ultimately bound into a hollow and outrightly.

固执的坚守，在众多期期艾艾的日子，最后也必将化为空洞和决绝。

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。