| 1. | Adjusting technology and operating parameters were studied when rapeseed prepressing extraction was remaked expansion extraction
摘要研究了将菜籽预榨浸出改造为膨化浸出的工艺设备和操作参数的调整。 |
| 2. | In the experimental research , the experiment equipment was firstly design , and the value of prepressing can be change by adjust the distance of two soleplates
在试验方面，先设计出能够达到试验目的的设计方案，再设计出能够调整预紧力大小的试验装置。 |
| 3. | In the compression moulding technology , preheat and prepressing procedures are added to improve the flowability of the bond and physical and mechanical properties of the product
在压缩模塑工艺中，增加预热、预压工序，提高粘合剂的流动性和产品的物理机械性能。 |
| 4. | The prepressing - force is changed by the state of the prepressing - contact cushion structure , and the slip phenomenon is appeared in the vibration environment
预紧接触式垫层结构中的预紧力是随系统的状态而改变的，在一定的振动环境下，会产生滑移、接触分离等现象。 |
| 5. | The simplified prepressing - contact spring - damping system was studied in this dissertation . the nonlinear dynamic characteristic of this system was research by experiment method
本文以简化的预紧接触式弹簧阻尼系统为研究对象，着重于用试验方法来研究系统在动态载荷作用下的非线性动力学特性。 |
| 6. | Under the small amplitude condition , the system becomes weak nonlinear system , it can be solved by harmonic balance method , the result show that the frequency is in respect to the amplitude of vibration and the value of prepressing
在小振幅条件下，系统是弱非线性，可以利用谐波平衡法对系统进行定量分析，得出了系统频率与振幅、预紧量的关系。 |
| 7. | This machine can realizes functions of prepressing , vacuum and striking moulding . besides , adopting programmable control and full hydraulic operation , this machine owns advantages of striking at order according to light and heavy , being an ideal brick - making equipment
该机能实现预压吸真空打击成形的功能，采用可编程控制，全液压操纵，具有轻重排序打击等特点，是理想的制砖设备。 |
| 8. | In the theoretical analysis , first the dynamics model of the prepressing - contact spring - damping system was established by vibration theory . then the stability of the solution of this system was studied base on the qualitative theory of nonlinear vibration
在理论分析方面，首先根据振动理论建立预紧接触式弹簧阻尼系统的力学模型，然后利用非线性振动的定性理论研究系统周期解的稳定性。 |
| 9. | Model 204 pre - press is a continuous screw press and suitable for prepressing - extracting technology of the vegetable oil plant to process the seeds containing more oil such as peanut kernels , cottonseed kernels , rapeseed , safflower seed and sunflower kernels
204型预榨机是一种连续螺旋榨油机，适用于植物油厂预榨浸出工艺，处理花生仁、棉籽仁、菜籽、红花籽、蓖麻籽和向日葵仁等含油较多的油料。 |
| 10. | At last , in according to the experiment results , the interpretation of the mechanism of the slip phenomenon of prepressing - contact spring - damping system was given in this dissertation . further more , the relationship among the limit frequency , the value of prepressing , excitation frequency , the amplitude of excitation and the materiel parameter was analyzed . base on the theory analysis the limit frequency formula was given , and the contact - slip condition for engineering application was concluded
最后根据理论研究与试验分析的结果，分析预紧接触式弹簧阻尼系统产生滑移现象的机理以及共振峰值漂移现象的理论解释，并通过定性分析接触分离时的频率与预紧量、激励频率、激励力幅值以及垫层的材料参数之间的关系，提出能定量描述系统出现滑移现象的极限频率公式，总结了预紧接触式结构始终保持接触的条件。 |
