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Abstract: This paper describes variable constructional key technology in plastic injection mould CAD,and present a sample of geometry restricting and engineering restricting in assemble designed.
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文摘:对塑料注射模计算机辅助设计软件中装配模型的概念和数据结构进行了描述，并给出了一个装配关系的描述实例。 |
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Abstract: This paper describs the smelting technology of high toughness nodular cast iron QT400-18 in cupola.The choice of raw material,chemical composition and the process of nodularization and inoculation is analyzed also.As a result,the reasonable seml
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文摘:本文阐述了在冲天炉熔炼条件下铸态高韧性球墨铸铁QT400-18生产技术工艺，并对原材料选用、化学成份选择、球化处理工艺、孕育处理工艺进行了分析研究，确定了合理的熔炼工艺，为生产合格材质铸件提供可靠的保证。 |
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Abstract: This paper developed a vibratory tapping chuck base on vibratory cutting principle.The characteristic of the vibratory cutting force using the chuck is investigated by large number of experiments.
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文摘:本文根据振动攻丝基本原理，研制出具有振动攻丝功能的振动攻丝卡头，并利用该卡头对振动攻丝切削力变化特点进行了大量的实验研究。 |
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Abstract: This paper discribes the principle of rook acoustic emission techniques.Some applications such as insitu rock stress measuring,locating high stress zone,predicting roof falling and evaluating rook stability are presented.
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文摘:论述了岩体声发射技术的基本原理，介绍了其在采矿工程中的若干应用成果：地应力测量、高应力区圈定、冒顶预测预报、稳定性评价。 |
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Abstract: This paper discribes the technological process,characteristic and effect of the microcoelectronics farinfrared chain reaction in the belt spraying water system.
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文摘:阐述了微电子远红外联动仪在胶带喷雾降尘系统中的流程、设备特性及运行效果。 |
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Abstract: This paper discussed mainly the operational tactics of the moderate management on the condition of longterm land contractual management on household basis, put forward the main operational tactics:initiated the transference and concentration of
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文摘:探讨了在土地家庭承包经营长期稳定下规模经营的战略选择，提出其主要的运作战略，即通过倡导农地使用权合理流转集中，推进规模经营，吸纳劳动力、科技、资金等要素，并配以优质服务形成规模效益，同时根据区域差别对发达地区与欠发达地区进行不同的战略选择。 |
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Abstract: This paper discussed process,characteristics of the equipment and the operating effects of large sized pulse jet bag filter with long bag and low pressure in the cleaning of 100t DC electric furnace.
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文摘:阐述了长袋低压大型脉冲袋式除尘器在100t直流电弧炉的除尘系统中的流程、设备特点及运行效果。 |
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Abstract: This paper discussed the physicalmetallurgical process during laser hardening withsteel and cast iron, Presented the technique designprinciple of laser hardening to achieve good resultsIt also introduced the inspection method for laserhardened s
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文摘:讨论了钢和铸铁在激光表面淬硬时的物理冶金学过程，提出了激光淬硬获得优良效果的工艺设计依据，介绍了对钢铁零件激光淬硬表层的检验方法。 |
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Abstract: This paper discussed the related parameters and important constructional matters in using soundless broken preparation for demolishing concrete and steel reinforced concrete.
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文摘:以施工实例阐述了无声破碎剂在拆除混凝土和钢筋混凝土时的有关参数及施工注意事项。 |
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Abstract: This paper discussed the roadways pressure characteristics of south sublevel caving region in Fengshan Copper Mine.By means of engineering practice and the measure results in site test,to counter the feature of roadways pressure,the supporting/r
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文摘:对丰山铜矿南缘无底柱崩落法采区的巷道地压特征进行了探讨，针对其地压显现特点，结合工程实践和现场实验测量的结果，提出了不同地质条件下巷道的支护加固方案和地压控制措施。 |
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Abstract: This paper discusses an adaptive control scheme on time varying parameter with pure delay and inertia.First,control system predicts parameter of the plant based on the parameters recognized,and then calculates control output according to minimum
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文摘:对具有滞后和惯性时变对象,提出了一种自适应预测控制方案,对对象参数进行预测,利用最小方差控制方法进行控制,确保系统在对象参数变化时仍保持优良的控制性能.根据本文提出的方法,对蒸汽炉系统蒸汽温度控制进行了仿真,取得了较满意的控制效果. |
