查询词典 gradient of scalar field

Heat transfer performance of different backfill materials and temperature field variation of ground-coupled heat pump system are studied.

试验研究了两种不同回填材料地埋管换热器的热响应性能、地源热泵运行对地源温度场的作用。

Since you have a very good job and family background,it's very natural for you to pay more attention to the field of spirit.

Since你有一个很好的工作和家庭背景，这是很自然的你更加注意spirit。

In this dissertation, deep exploration was made in the field of systems management for raising an enterprise's efficacy level on the background of the task of" Chinese labour productivity management theory and methods"assigned by the National Science Foundation.

本文是在对国家自然科学基金会下达的"我国劳动生产率的管理理论与方法"这一课题进行研究的基础上形成的。

Moving targets real-time detection, recognition and tracking in complex background is an important research task in Automatic Target Recognition field. It has been widely used in military filed such as weapon control and guiding system.

复杂背景下运动目标的实时检测、识别与跟踪是自动目标识别领域的一个重要的研究课题，在武器制导等军事领域得到了广泛的应用。

The magnetic field and backset can not influence a method named electroˉopˉ tic measuring method which is got by charactering black and white s tripes on the gyro.

光电测量法利用在陀螺转子上刻上黑白条纹测量角，采用这种方法可以不受磁场、涡流等因素影响。

The backup and recovery of the system is an important part of the data backup and recovery field.

系统的备份和恢复是数据备份恢复领域中的一个重要部分。

The backup and restore of database system is now a hot topic for the development of Database Technology for its importance in the field of application.

数据库系统的备份和恢复是当前数据库技术发展的一个重要课题，在实际应用中有着很重要的地位。

By analyzing the reason of the numerical oscillation phenomenon and computing the temperature field in plate rolling process,it is found that numerical oscillation can be restrained effectively when the heat capacity matrix is lumped by using backward difference scheme.

近年来，许多研究人员采用有限元法分析热轧和淬火等过程中的瞬态温度场。

The invention relates to construction and application of recombinant porcine parvovirus VP2 nucleocapsids which express foreign genes, belonging to the genetic engineering bacterin field.

本发明涉及表达外源基因的重组猪细小病毒VP2病毒样粒子的构建及应用，属于基因工程疫苗领域。

The term pathogenicity island is a new concept in the field of Bacteriology.

毒力岛(pathogenicity island，PAI)是近几年细菌学领域出现的一个新概念，它存在于许多细菌中，可能与新病原菌的出现和细菌毒力的进。。。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。