差频

Through the non-parameter test, the researcher discovered that flexibility and adaptability of creative performance in children's eurhythmics ability vary under four different teaching situations, but other abilities are not remarkably affected by the teaching situations; Also, the researcher analyzes sample data through multi-factor variable variance analysis and variable frequency cross-table analysis. The research finally demonstrates that providing children with music subject significantly impacts their flexibility and adaptability of creative performance: the examples provided also not belly influences children's rhythm and time, but the subject, the example as well as their interaction have no remarkable influence on the other constituent of children's eurhythmics ability.

本研究用SPSS11.5软件对幼儿律动能力的得分进行量化处理，通过非参数检验，研究者发现幼儿律动能力中的创造性表现的灵活、变通性在四种教学情境下具有显著性差异，而其他能力受教学的影响均不显著；研究者又对样本数据进行多因素变量方差分析和频数交叉表分析，结果显示：提供音乐主题对于幼儿创造性表现的灵活、变通性具有极为显著的影响，提供榜样对于幼儿的节奏、节拍感也具有一定程度的影响，而对于幼儿律动能力的其他组成部分，主题、榜样以及它们的交互效应所起到的作用并不显著。

This paper in troduces the whole process and some techniques for underwater topography and sludge thickness surveying of Shuiguo Lake, done by GPS Receiver and dual frequency digital Echo Sounder. Its results offer reliable information for Shuiguo Lake's improvement.

阐述了采用GPS接收机和双频数字测深仪，以伪距差分实时定位测量模式施测水果湖水下地形和淤泥厚度的全过程和若干技术问题，所得结果对水果湖的治理提供了可靠的资料，指出了武汉市湖泊治理的迫切性。

Frequency stabilization laser based on transverse Zeeman effect provides several characters such as high stabilization frequency.

基于横向塞曼效应的稳频激光器，频率稳定度高，抗干扰能力强，输出功率大，差拍信号频率低、易于接收和处理，可直接输出相干性和偏振度都很好的线偏振光，便于测量偏振、双折射等物理量。

After transverse Zeeman effect is introduced to reduce the mode coupling, the laser could produce two orthogonal linear polarized components with 5MHz beat frequency. The effect of the magnetic field's direction to generation of the dualfrequency and the polarization property of the laser is investigated Based on theoretical study and experimental investigation to the beat frequency tuning character, a novel method for stabilizing the laser beat frequency is brought forward.

现代机械工业的发展使得机床、三坐标测量机等的运行速度已提高至1m/s，为适应这种发展趋势，本文研究了高频差（5MHz）激光干涉仪的光源、稳频和外差信号的处理等基本问题，建立了测量速度可达1m/s的高测速激光干涉仪，并对其在加工中心主轴热漂移测量系统和加工中心误差实时测量系统中的应用进行了研究。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。