According to analyse the safe performance of double - barrelled middle - level pressure acetylene generator in the extrusion type to the dipeptide , and carry on the improvement of structure , the object of the safe usage was attained 摘要对双挤压式中压乙炔发生器的安全性能做了分析,并进行结构改进,解决了使用中的安全隐患,达到安全使用的目的。
Word training includes spelling , meaning and function . sentence training consists of comparative analysis and translation exercise , which are intended to help students avoid mistakes resulting from the negative influence of modes of chinese thinking 句子的训练方法有;针对学生写作中易犯的错误通过对比分析和翻译练习进行训练,句式多多样化训练包括句子合并、句型转换和平行结构训练。
Employing the interlaced scanning , current tv system can compress the frequency band of tv signal effectively and facilitate transmission . but this method reduces the scanning lines of pictures and the frequency of the field . it leads the pictures displayed on tv to have such disadvantages as large area flicker , edge flicker , interlace flicker , raster visibility and creeping line etc . to satisfy people " s vision feeling better , the big - screen , multi - function and high quality tv - set have been made great progress 现行的广播电视系统由于采用隔行扫描方式,从而有效地压缩了电视信号的频带,有利于传输;但由于这种方式使得图像的扫描行数少,场频低,导致了重显的电视图像有大面积闪烁、边缘闪烁、行间闪烁、行结构可见及行爬行等。
Then on the basis of calculating result from the prefigurative deviation control structure calculation , " rational data forecast processing about error adjust in prefigurative deviation control was made by the prefigurative theory of bp neural network and corresponding program and software matlab6 . 1 . at last via the data comparison with the practical survey data draw a conclusion : it is feasible for the construction prefigurative deviation control and error adjust used in pc rigid frame bridges to use the calculation model and program brought forward in this paper 同时,在对预应力混凝土刚构桥施工过程线形预拱度控制的结构计算分析的基础上,利用bp神经网络的预测理论和相应的程序及软件包matlab6 . 1对预拱度控制中的误差调整进行了较好的预测处理,通过与实际施工数据及成桥后测量结果作分析比较,得到结论:运用本论文的计算模型和程序对预应力混凝土刚构桥预拱度控制过程进武汉理工大学硕士学位论文行结构分析和误差调整处理是可行。
In the second chapter , during the study of compound x - ray refractive lenses , diffraction function of compound lens is derived in the light of refraction and absorption effect and the design theory of x - ray is deduced using diffraction theory in connection with the characteristic of x - ray band . the structure design of this device and micro - machined technique are also discussed 在第二章x射线聚焦组合透镜的研究中,针对x射线波段的特性,综合考虑折射和吸收效应得出组合透镜的衍射屏函数,利用衍射理论推导出x射线聚焦组合透镜的设计理论并进行结构设计与微细加工制作技术研究。