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1.
为实现以蜡纸为包装材料的6~9克蜜丸及糖球机械化内包装,设计了由一条主线和一条辅线组成的自动裹包工艺流程.本文介绍了该工艺流程的特点.  相似文献   

2.
本文报导了以锯末为原料,利用碱熔法制备草酸的方法,并确定了碱熔法的最佳反应条件和工艺流程,为开发利用废锯末提供了一条新途径.  相似文献   

3.
得到了一种将羊毛变性为仿羊绒的酸预处理─氯化法处理技术,优选了处理的工艺流程和主要工艺参数.开发出仿羊绒毛织物产品牙签条呢,取得了好的经济效益  相似文献   

4.
猪脑组织中磷脂的综合提取研究   总被引:10,自引:2,他引:8  
介绍了利用哺乳动物猪脑组织提取神经醇磷酸,卵磷脂和脑磷脂的工艺流程,并对某些关键环节进行了分析讨论,不仅为研究磷脂的生物学效应提供了原料,也为猪脑组织的综合利用开辟了一条可行的途径。  相似文献   

5.
本文在作者过去工作[1]的基础上深入地研究了用含锌废料生产氧化锌的物理化学原理,工艺流程、工艺条件及操作步骤,为含锌工业废料的合理利用开辟了一条有效的途径。  相似文献   

6.
介绍了利用自制的混凝剂与电石渣联用处理印染废水的一种新方法,该方法工艺流程简单,投资少,运行费用低,易于操作,CODcr去除率高,为中小型印染厂废水治理开辟了一条新的途径。  相似文献   

7.
以IS系列水泵类零件为例介绍远红外静电喷漆生产线工程设计、工艺流程、静电喷漆原理及生产线设备,为泵类生产厂家提供一条经济适用而且能迅速提高泵类产品外观涂装质量的有效途径。  相似文献   

8.
从产品设计、生产工艺流程安排、纺纱工艺、织造工艺方面详细介绍了开发天丝灯芯条织物的全过程,为以后开发各种面料提供了切实有效的整体开发思路.结合开发天丝灯芯条织物的生产实践,制定了切实可行的生产工艺.通过调整和优化工艺参数,解决了纺纱、织造过程中遇到的技术难题,为今后开发天丝织物合理选择工艺参数提供了有价值的参考.  相似文献   

9.
柴油机中的灰铸铁零件,如机身、齿轮箱盖等,都采用一条固定不变的工艺流程,即造型——合箱浇注——落砂清理——热时效——去毛——机加工。进行热时效,目的在于降低设灰铸件的内应力,保证尺寸精度和机械性能。因此,设计人员在制定工艺流程时,把热时效作为制定灰铸件工艺流程的先决条件。  相似文献   

10.
应用模糊控制理论与算法,针对自来水监控系统大惯性的影响.提出一种系统参数的模糊控制算法。给出了系统工艺流程和控制框图,并介绍对相关参数的检测及其模糊控制器的设计方法.为模糊控制算法在自来水监控系统中的应用开辟了一条新途径。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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