You can set an event handler for the first time the user enters data into the main content field. Figure 2 illustrates.
可以设置用户首次向主要的内容字段输入数据时的事件处理程序，如图2所示。
In the field of communication security, the main applications of the hash function are data integrity verification and signature authentication.
哈希算法在信息安全领域主要应用于验证数据完整性和签名认证。
In this paper, the main factors affecting tunnel erosion and their mechanism were studied based on field survey and data from sample analysis.
本文以野外调查和资料分析为基础，分析研究了影响洞穴侵蚀的主要因素和机理。
Schema matching is a basic problem in the field of data integration, the main aspect of it concerns a match between global schema and local schema.
而模式匹配是数据集成领域中一个基本的问题，它主要考虑全局模式和局部模式之间的匹配。
In order to get the crustal anomaly field, the main field, magnetospheric, ionospheric and induction fields from the Magsat data must be subtracted.
为了提取地壳异常场，必须从观测资料中消除主磁场、磁层场，感应场和电离层场。
The main characteristics of the interior fluid field were described by comparing with two groups of data.
通过两组数据的比较，得到了内部流场的主要特征。
There are two main reasons that cause ECT reconstruction images not accurate: the soft field characteristic of ECT sensor sensitivity, and the very small projection data.
ECT图像重建精度不高的主要原因是ECT敏感场的“软场”问题以及投影数据有限。
Classification is an important task in data mining field, how to discover the intelligible and interesting classification rules is one of the main problems facing data mining.
分类是数据挖掘的一项重要任务，如何发现可理解的、令人感兴趣的分类规则是数据挖掘面临的一个主要问题。
Some successful algorithms have been discovered in this field. The main subject is to find interesting association or correlation relationships among a large set of data items.
关联规则在数据挖掘中是一个重要的研究领域，已有一些较成功的算法，其主要任务是发现大量数据中项集之间的关联或相关联系。
The paper introduces a PC-E500program for settlement observation field data col-lection, including its main functions and features, programing processes and several precautions in use.
文章介绍了PC -E500用于沉降变形监测外业数据采集程序的主要功能和特点，设计思路以及使用中的注意事项。
Based on the analyses of main characteristic factors which affect the overflow spray-motion and their membership functions, the fuzzy relation matrix from the field data is established.
在分析和给出影响泄洪溅水量的主要特征因子及其隶属函数的基础上，由若干原观资料，建立了泄洪溅水特征因子的模糊关系矩阵。
This article describes the field bus data and other communication technologies of the main features of the current list of a wider application of several field bus.
本文先容了现场总线及其他数据通讯技术的主要特点，列举了当前应用较广的几种现场总线。
Sharing between various spatial data has always been a main problem to the development of VR-GIS, which is a new field integrating GIS and VR (Virtual Reality).
多源空间数据共享一直是VR - GIS(虚拟现实地理信息系统)应用系统开发中需要解决的重要问题。
The main parameters and method of pressure grouting in improving earth-rock mixture embankment are analyzed by field test data.
通过现场试验分析了某高速公路土石混填路堤压力灌浆处治的主要基本参数和检测方法。
The data transmission broadcasting station has been applied in the industry control field broadly, nowadays it is still the main instrument of industrial control.
数传电台在工业控制领域的应用广泛，目前仍然是工业控制领域的主要传输手段。
Similar with traditional field sequential color LCOS microdisplay chip, it consists of three parts: row scan driver, data driver and pixel array. The main difference of them is the row access method.
与传统场序彩色LCOS微显芯片类似，该芯片的主要模块由行扫描驱动器、数据驱动器和象素驱动矩阵三大部分组成。
Soil slope displacement was important manifestation of soil damage, the main research methods were the landslide field investigation and the measured seismic data analysis.
边坡位移是土体损伤的重要表现，研究方法主要是对滑坡进行野外调查、实测地震资料分析等。
However, the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography, such as point, line and poly geometry objects.
当今的GIS系统的空间数据模型，主要反映地图制图领域的点、线、面对象管理与操作的几何知识。
Rough set theory is one of the main subjects in the field of machine learning and data mining.
粗糙集理论是机器学习和数据挖掘领域的重要课题之一，其中属性约简算法是该理论实现应用的主要算法。
Based on data analysis and field survey, the study chooses various evaluating indices to finish the research and evaluation on main crop straw in Jilin province.
通过实地调查和文献分析，选择不同的秸秆资源评价指标，对吉林省主要农作物秸秆资源进行了调查和评价。
The main data in this study derive from pre- and post-course written interviews, face-to-face interviews, course products, and field observation notes.
本文的数据来源于包括期初与期末两次开放式问卷调查、访谈、课程学习成果和课堂观察记录。
The regression output shows that the calculated stress match the measured data, also the gravity and horizontal tectonic stress are the main factors of the stress field in the project area.
结果表明：计算值能够较好地拟合实测值，证明自重应力水平构造应力是形成地应力主要因素。根据回归分析结果，获得了整个工程区域岩体的地应力分布。
The regression output shows that the calculated stress match the measured data, also the gravity and horizontal tectonic stress are the main factors of the stress field in the project area.
结果表明：计算值能够较好地拟合实测值，证明自重应力水平构造应力是形成地应力主要因素。根据回归分析结果，获得了整个工程区域岩体的地应力分布。
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