几分

We introduce the principle and arithmetic of Finite Difference Time Domain method particularly, and primarily discuss on several essential questions including excitation sources, the conditions of stability of calculation, and Perfectly Matched Layer boundary conditions. All of these factors have effect on the results of the numerical simulation.

2详细介绍了有限时域差分法(Finite Difference Time Domain， FDTD)的原理和算法，着重讨论和分析了激励源设置、FDTD法的稳定条件、PML吸收边界条件等几个关键问题，这些因素会直接影响模拟结果。

Score GR and 30% Armure EC showed best inhibiting to mycelial growth, but the 10% polyoxin B DP was the worst. Leaves of four turfgrass species (Cynodon hybrid, Lolium perenne, Agrostis plustris, Poa pratensis) were inoculated with conidial suspensions of C.verruculosus.

喷雾病原菌分生孢子悬浮液于狗牙根、黑麦草、高羊茅、早熟禾等几种草坪草活体叶片上并保湿培养，在接种后不同时间点分别从每个寄主上取样，对样品进行组织透明、染色，观察病原菌对寄主植物的侵染过程。

On the basis of the theory of option pricing,We study the connection between America call option and European call option;Under the assumption condition of Black-Scholes formula ,use the theory of martingales and stopping time,get the conclusion that: the price of America call option equals the price of European call option; Discuss some numeric computing methods of the put America option pricing, with the invarional inequaility for optimal stopping, prove the boundary property of America put option price ...

基于期权定价的基本理论，研究美式看涨期权与欧式看涨期权之间的关系；在Black-Sc holes公式假设条件下，利用鞅和停时理论，得美式看涨期权的价格与欧式看涨期权的价格相等；探讨美式看跌期权价格的数字化计算，在相关假设条件下，利用基于最优化时的变分不等式证明了美式看跌期权价格的有界性，并介绍了几种美式看跌期权价格的数字化计算方法。

As an example he shows me an astrolabe, a navigation tool that preceded the sextant.

他带我看的其中一样是星盘，这是一种比六分仪出现年代还要早的航海工具，目前存世的仅有少数几件。

The backbreaker was provided by one of Bryant's sidekicks, Lamar Odom, whose three-pointer gave the Lakers a 13-point lead and sent thousands of fans streaming for the exits with just less than three minutes remaining.

kobe的队友奥多姆投中了关键的球，他的三分球使得湖人最终以13分优势获胜。几千名球迷在比赛还剩不到三分钟时开始陆续退场。

It consists of six parts; the first introduction relating to its significance and backset; the second is a summary about documents, the purpose of content and methods of research. The third expands on the effective teaching connotation, theoretical basis and characteristics of teaching mode.

论文共分六大部分，第一部分为前言，介绍本论文研究的背景、意义；第二部分为文献综述和研究目的、内容和方法；第三部分对有效教学及教学模式的内涵、理论基础、发展、现代教学模式的特点等几方面做了详细的理论上的阐述。

In this paper We study existence of solutions of variational inequalities in a reflexive Banach Space,and acquire several existence results.

本文研究自反Banach空间中的变分不等方程解的存在性，得到了存在性的几个结果。

After being banned, Risberg and several other members of the Black Sox tried to organize a three-state barnstorming tour.

这里的 barnstorm ，说实话我也没学过，不过八成还是猜的出意思，同样的又是分词构句，在被禁赛后， Risberg 以及几个黑袜球员试著要组织跨越三州的巡回比赛。

In this dissertation, GPS baseline solution precision is analyzed since the following aspects: 1, Different length baselines are processed and analyzed by single frequency model and ionosphere free model. 2, Basing on current single point positioning precision, certain coordinate error is added into fixed points to study the result. 3, Baseline is processed and analyzed with different observation vectors and their lineal combination models. 4, 24 hours observation was divide up to process baseline.

本文从以下几个角度研究了影响GPS基线解算精度的因素：1、采用单频和消电离层模式对不同长度的基线分别解算，对处理结果进行分析。2、根据目前单点定位精度给起始点加上适当的坐标偏差，研究起始点坐标偏差对基线处理结果的影响。3、选用不同的观测值及其线性组合，对基线解算结果进行研究。4、对24小时观测的数据分时段处理，分析观测时间段对基线处理结果的影响。

The weather often changes, you may be caught in the rain and may catch a cold while traveling.

现在地球已变得10分拥挤，几十年后也许只剩下站立的地方了。

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。