查询词典 extrusion

There are some basic chemicophysics problems about the foaming extrusion processing to be studied and clarified. The relationship between the formula, the processing condition, the apparatus parameter setting and the density, the physicomechanical properties, rheological property, were researched in detail in this artical, according to the extrusion process of PVC in the rheometer.

但在其低发泡挤出过程中尚有许多基本化学物理问题有待研究，本文利用PVC在流变仪的挤出加工，详细研究了相关配方、工艺条件、设备参数设定与发泡PVC制品的密度、物理机械性能以及加工流变性的关系。

The aim of the current study was to examine the effect of the orthodontic extrusion movements on the periodontal parameters during a 6-month period of clinical observation and to find out whether orthodontic tooth extrusion makes the gingival margin move in a coronally direction.

的目的，目前的研究是研究的影响正畸挤压运动的牙周参数在6个月期间的临床观察和了解自己是否正畸牙齿挤压使牙龈缘朝冠方向。

By the analysis and comparison of upsetting extrusion and cold forging technology,the upsetting extrusion technology on the countersunk square neck bolt is introduced in the paper.

通过两种工艺方案中成型凹模受力情况的分析比较，说明用镦挤工艺生产沉头方颈螺栓，可降低镦锻力，提高模具寿命，保证零件质

The author designs an extrusion head used to produce a kind of medical interventional catheter which adopts an integral core rod, a round-hole diffluent bracket and an extrusion head with double tubes ,and introduces the designing process in detail.

设计了一种医用微细介入导管的挤出机头，其特点是采用了整体芯棒、圆孔分流支架和双管机头结构，并详细介绍了该挤出机头的设计过程。

Therefore, the eastward extrusion of the northern Qinghai-Tibetan Plateau is limited and this is in accord with "the imbricated thrusting transformation – limited extrusion model".

因此，青藏高原北部物质向东挤出的速率和幅度是有限的，符合&叠瓦状逆冲转换—有限挤出模型&。

These conclusions suggest that the extrusion rate and extent to east of the material is limited, in line with the "thrust imbricated conversion - limited extrusion model."

总的来看，肃北地区的主要断裂滑动速率和逆冲速率都比较低，叠瓦状逆冲现象比较普遍，区内有断裂、盆地、褶皱等多种构造参与了变形分解和运动转化，这些结论都说明了该地区物质向东挤出的速率和幅度是有限的，符合&叠瓦状逆冲转换—有限挤出模型&。

The law how these factors influence the joint"s property was pointed out. A formula about the relationship between extrusion times and contamination remainder was founded. Main reason to bimetal"s inharmonic deformation was the difference of their mechanical property. Thereby, the empirical formula showing the relation between metal combination"s mechanical property and quality of joint was constructed. Integrated influence of extrusion times and metal"s mechanical property to quality of cold pressure welding joint was discussed.

在模拟结果分析和实验的基础上，对影响异种金属冷压焊焊接性的工艺因素进行了分析；探讨了诸因素对接头性能的影响规律，并且建立了挤压次数与界面污染物残留量之间的数学表达式；指出了两种材料力学性能差异是造成不协调塑性变形的主要原因，并且建立了材料力学性能与其冷压焊焊接性之间的经验公式；定性的讨论了挤压次数及材料力学性能对冷压焊接头性能的综合影响。

In order to further understand the organization and performance of the product extruded from beryllium bronze,the nonuniformity of ingot casting organization extruded from beryllium bronze,the quenching macrocrystalline ring organization and layer structure of extrusion bars,the nonuniformity in mechanics,and extrusion effects were analyzed.

为了进一步了解铍青铜正向挤压制品的组织和性能，分析了铍青铜挤压铸锭组织的不均匀性、挤压棒材淬火后的粗晶环组织、以及挤压棒材的层状组织；同时对挤压棒材力学性能的不均匀性和挤压效应进行了分析。

Resilts In the observation of cervical nucleus pulpous prolapse and free disc fragment showing fibrous circle rupture,extrusion direction and nerve-root pressure in cervical region,and showing fibrous cicrcle rupture in lumbar region,the FFE was better than T1WI,T2WI.In judging extrusion direction and nerve-root pressure,the FFE sequence was better than T2WI and T1WI respectively.

结果在颈椎间盘髓核脱出与游离的观察中FFE序列对纤维环断裂、髓核脱出方向以及神经根受压的发现率均明显优于T1WI、T2WI；在腰椎间盘髓核脱出与游离的观察中FFE对纤维环断裂的显示率明显优于T1WI、T2WI；对髓核脱出方向的判定明显优于T2WI；对神经根受压情况的判定FFE优于T1WI。

Objective: The aim of this study is to investigate whether orthodontic extrusion movements have negative effects on the gingival tissues, and to detect the relationship between orthodontic tooth extrusion and the width of the keratinized gingiva.

目的：本研究以调查是否正畸挤压流动产生负面影响的牙龈组织，并检测之间的关系正畸牙齿挤压和宽度的角化牙龈。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。