Experimental Investigation on Chip-break Influenced by Cryogenical Cold Air jet     

YANG Ying  TONG Ming-wei  YAN Xing-chun  SHEN Qiang 《保鲜与加工》2004,(5):74-77

In machine cutting, the replacement of traditionalKGcutting solution with cryogenical cold air jet not only possesses a good cooling and lubricating efficiency, but also can avoid the occurrenceof environmental pollution. In order to clarify the manner and performance of discharged cutting chip under cryogenical cold air jet condition, an experiment was carried out for steel grade 45 in the dry and cryogenical cold air jet cutting comparatively. The effects of cryogenical cold air jet on the breaking of cutting chip are discussed. Experimental results reveal that, in the valid ranges of pressure and temperature, the cryogenical cold air jet can widen the chip broken region effectively. Different insufflating angle of cold air behaves different influence on the chip-break. From the experiment, it has been gained that the optimized jet insufflatingangle, temperature effecting range and pressure working range of cold air, which provides the foundation of industrial manufacturing.  相似文献   

Some Ideas on Reconstruction of Villages inside the City     

YUE Jian-ming  YAN Ze 《保鲜与加工》2005,(2):95-99

In this paper, the historical reasons of formation of the village inside the city are analyzed. It is indicated that such situation for the villages inside the city are the result of joint action of both the villagers and the government. The foundation of villages inside the city laid on the simple compensation for farmers in confiscating the rural land and lack of intelligence aids. In this paper, the ideas and measures for their reconstruction are put forward based on consideration of the reasons of their formation and difficulties in the reconstruction.  相似文献   

Microscopic Approach of the Nucleonic Aligned Property on 104Cd Nucleus     

TONG Hong  SHI Zhu-yi 《保鲜与加工》2004,(11):141-144

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Structure of Positive-parity Levels in 138 Ce Nucleus in Microscopic sdIBM-2+2q.p     

TONG Hong  SHI Zhu yi 《保鲜与加工》2002,(10):136-138142

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Discussion about Saving Energy in Refrigeratory   总被引：1，自引：0，他引：1  

WU Zhi juan  TONG Ming wei 《保鲜与加工》2002,(8):137-139

Food refrigeration is regarded as a high energy consuming trade. Under the long period system of state operated enterprise,there are many phenomenons of ignoring energy management and wasting energy. Energy consuming is not very clear for production.Consuming in our country is far more than the international standard and there is a distance between the middle_westland and the eastland. As a enterprise that faces the international market,it is important for it to strength the management so that the cost can be reduced. Considering those phenomenons of ignoring energy management and wasting energy in refrigeratory at present, some measures such as improved the unreasonable operation process, strengthening the energy management and automation to realize automatizing operation are improved to reduce the cost for refrigeratory trades.  相似文献   

关于杂交水稻种子产业化的思考   总被引：1，自引：0，他引：1  

童海军 《种子科技》2006,24(3):7-9

文章从杂交水稻种子产业化定义出发。系统论述了种子产业化的三个基本特征，即以市场为导向，以农业龙头企业为核心，有一种良好的利益分配机制；并预测了杂交水稻产业发展的三种趋势，即种业经营向多元化、多渠道方向发展，新品种成为提高市场占有率的重要筹码，强势品牌成为农民首选。在提出存在的问题的同时，提出了推进产业化的四大举措，即发挥各种优势。加快育、繁、推、销一体化；创立企业品牌和品种名牌；加强知识产权的保护，规范杂交水稻种子市场；走联合之路，发挥两方面的积极性。  相似文献   

汽车动力总成液压悬置元件特性研究     

童树波  夏长高 《农机化研究》2003,(4):199-201

液压悬置具有低频大阻尼、高刚度等特点，可以有效隔离和衰减发动机的怠速振动，降低车内噪声，提高乘坐舒适性。为此，应用流体一结构耦合理论的方法建立了某车动力总成悬置系统的动力学分析模型，并运用Adams软件对其动特性进行了仿真。仿真结果与已知实验数据基本吻合，从而证明了该模型建立的正确性。  相似文献   

浅谈如何搞好公益性农机培训工作   总被引：1，自引：0，他引：1  

童纪氚  罗永范 《中国农机化》2007,(1):91-92

就如何在新形势下搞好公益性农机培训工作提出了看法和建议,笔者分别在建立保障机制、队伍和设施设备建设、借力培训与科学培训等方面展开论述。  相似文献   

嘉善县农业机械化适应发展都市农业的配套对策     

谢建明  沈建伟 《中国农机化》2003,(6):51-53

加入WTO和市场环境的变化对浙江省嘉善县发展都市农业提出了迫切要求，改革开放的不断推进为嘉善县发展都市农业提供了动力．接轨大上海、融入长三角使嘉善县发展都市农业成为必然选择。总结了嘉善县发展都市农业对农业机械化提出的新要求和亟需重点研究、开发、推广的农机业机械技术项目：提出了农业机械化适应发展都市农业的6条配套对策措施。  相似文献   

设施农业机械设备及应用   总被引：1，自引：0，他引：1  

龙建明  李敏科  朱亮亮  林素敏 《农机化研究》2006,(11):50-53

近年来，我国设施农业的栽培面积已位居世界第一；但总的说来，农业设施技术含量不高，除拥有少量的现代化大型连栋温室外，其它各种温室的机械装备较低，导致了生产效率低下，产品质量及产量不尽如人意。为此，综述了设施农业机械的应用情况。结果表明：应用设施农业与温室生产机械化技术．能够大幅度提升可控条件下的集约化、高效化生产经营水平，将人们从繁重的体力劳动中解放出来，保证作物稳产高产，显著地提高农业整体效益，促进农业经济协调发展。  相似文献