查询词典 frontiers

Active Galactic Nucleus have been an important branch and one of the most active frontiers in the field of modern astrophysics. It is related to the most fundamental problems in astrophysics .

活动星系核是现代天体物理学研究的重大前沿课题，涉及到天体物理学中最基本的问题。

The degeneration and barbarization of Roman army is important issues for the crises of the Roman imperial frontiers,and fort's defenders can't repelle the attacking en...

考察罗马帝国边患，军队蛮族化是重要内容。军队堕落以及蛮族化的完成，使帝国"有边无防"，最终走向衰亡。

She is a biochemist who works on the frontiers of biology.

她是从事生物学前沿研究的生化学家。

N; }: S She is a biochemist who works on the frontiers of biology.

她是从事生物学前沿研究的生化学家。

The study appears in the January 1, 2007 issue of Frontiers in Bioscience.

这项研究被发表在2007年1月1日发行的前沿，在生命科学领域。

It was one of the last great frontiers in aviation: to circumnavigate the globe in a balloon.

这是航天领域最后的伟大创举之一：乘坐热气球环绕地球。

In the paper,the theory of production frontiers and its non-parametric measurement ap～proaches are used to figure out the input compressing productivity index,Malmquist productivity index based on the input oriented non-parametric production frontiers .The technology efficiency and thedis～tance function and their nonparametric models anr introduced on the conditions of Constant Return to Scale and input strong disposability The Non-pparametric measurement approaces and the decomposition of Malmquist prisuctibity index are put forward

孙巍文采用生产前沿面理论及其非参数方法，对假定产出确定条件下投入压缩的生产率指数基于投入前沿面的Malmquist生产率指数进行了理论与测度方法研究，通过规模收益不变且要素自由，C，S，前沿面条件下的技术效率，距离函数及其非参数模型的分析，本文给出了基于非参数，C，S，投入前沿面的Malmquist生产率指数的非参数测度模型，并从技术变化和资源配置效率变化两个方面进行了分解

Hello, I'm Anna Coren, welcome to Earth's Frontiers.

大家好，我是安娜·科隆，欢迎收看《地球新领域》。

It is argued that planning is a defensible process and defending using some strategic frontiers at security levels may be more reasonable and effective.

有人争辩说，规划是一个辩证的过程和捍卫用一些战略前沿，在安全水平，可更合理和有效。

Besides, we can also determine the share of the every piece of stock. Finally, we give out the comparing analysis for the frontier we have got, breadthwise and lengthways: frontiers with different dealing costs and confidence levels; frontiers based on different risk measurement.

同时，本文还对所得到的有效前沿进行了比较分析：一方面是横向的，当预先设定参数改变时(如交易成本k、置信水平α)的不同有效前沿的比较；另一方面是纵向的，比较了基于不同风险度量的优化模型的比较前沿。

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。