The vibration of the nonlinear pendulum is studied by means of linearization and correction method, the curves of the period ratio and the relative error is plotted.
应用线化和校正方法，研究了单摆的非线性振动，作出了周期比和相对误差随摆角的变化曲线。
In order to analyze the theoretical model for relative acoustic-to-seismic coupling ratio method to detect land-mine, an experimental system for acoustic landmines detection was developed.
为了分析基于相对声-地震耦合率法探测地雷的理论模型，设计了一个声波探雷实验系统。
Based on the straight cascade and the fan cascade, the design parameter of aspect ratio, maximum relative thickness and solidity were remodeled by programmed design method.
在原直叶片与三维风扇叶片的基础上，通过编程设计手段改变其设计参数，使得叶片的展弦比，最大相对厚度与稠度等参数发生改变。
And the relations between heat transfer rate and charging ratio, cooling, method, relative position of heating end and cooling end etc was investigated;
研究了其传热性能与充液率，冷却方式，加热端与冷却端相对位置等各种因素的关系；
ObjectiveTo analyze the relative similarity in species of Herba Dendrobii by the method of common and variant peak ratio in UV and dual-index sequence analysis.
目的采用共有峰率和变异峰率双指标序列法分析不同种石斛的相似性。
ObjectiveTo analyze the relative similarity in species of Herba Dendrobii by the method of common and variant peak ratio in UV and dual-index sequence analysis.
目的采用共有峰率和变异峰率双指标序列法分析不同种石斛的相似性。
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