Generally , the frame includes an environment of study installed with information technology and varieties of manners of study , a construction of a self - directed reading classroom , a device of strategies of the teaching of self - directed reading , and management for self - directed reading classroom 该教学设计框架包括信息技术学习环境和多样的学习方式,自我导向式阅读课堂的创建,自我导向式阅读教学策略的设计,自我导向式阅读课堂的管理。
It was reported in this paper that in the aes analysis of aluminum alloy ingots by the photoelectric direct reading spectrometer , segregation of alloying elements , especially silicon in the alloy was observed , leading to deviation of analytical results obtained from different site of excitation 摘要在用光电直读光谱仪分析铭合金时,在不同激发点所取得的合金元素的测定结果,特别是硅的刚定值,之间存在明显偏差,并证实系由合金的偏析所引起。
Second , this dissertation focuses on the error analysis of digital method of the pulse compression signal generation based on lfm signals . the difference and similarity between technique of the direct reading of the stored digital waveform and technique of the direct digital synthesis were also compared ?第二部分以lfm脉压信号为基础,围绕数字脉压波形产生系统的误差分析展开,对波形存储直读法和直接数字合成法两种数字波形产生技术进行全面的分析对比。
In this paper , germanium concentration in ge - dopped silicon bulk single crystals was measured by the methods of indution couple plasma ( icp ) direct reading spectrometer , sims , sem - edx , and the effective segregation coefficent of germanium under the situation of the changed speed was calculated , the result was 0 . 62 . according to the result , the curves of different ge concentrations were got 本论文利用二次离子质谱( sims ) 、化学分析法(电感耦合等离子体( icp )直读光谱仪) 、扫描电镜能谱仪( sem - edx )三种方法对不同掺锗浓度的czsige单晶中锗含量进行了测试,并对变速拉晶条件下锗的有效分凝系数进行了计算,得出锗的有效分凝系数( ke )为0 . 62 。
These parameters include bandwidth , carrier frequency , signal duration and signal repeat frequency . according to the parameters , we select the method direct reading the stored digital waveform to realize the waveform generation in the third part , the waveform generator system control including communication control , timing control and address generation is designed 第二部分研究了线性调频信号参数间的内在联系,包括信号带宽、中心频率、持续时间及重复频率等,设计了信号参数,并在前人研究的基础上选择了波形存储直读法作为信号产生方案。