查询词典 welded

The results show that the orientation of crystal grain is changed and crystal grain is refined by magnetic field. The optimal properties of welded joint appears when magnetic field frequency is 20 Hz.

结果表明，外加纵向磁场通过电磁搅拌作用改变晶粒的结晶方向、细化晶粒，在磁场频率为20 Hz时，焊接接头的力学性能达到最佳。

Minimization of joint volumes, renouncement of joint preparation , and omission of pre-and post treatment of welded joints reduce manufacturing costs of marine vessels and structures.

联合最小量，放弃联合编制，未事先和事后处理焊接接头降低生产成本和海洋船舶结构。

If the brushes can not be replaced and resistance welded without removing the coil then the coil must be removed and the brushes replaced.

如果不取出线圈就不能换炭刷并且电阻焊接，线圈必须取出，炭刷必须换新的。

Only those grades suitable for welding with guaranteed resistance to intercrystalline corrosion may be used for welded structures.

2只允许那些耐晶体间腐蚀的材料作为焊接结构。

Steel moment-resisting frames with welded beam-to-column connection were traditionally regarded as having excellent performance, and widely adopted in steel constructions, but this opinion changed after the 1994 Northrige earthquake and the 1995 Hyogoken-Nanbu earthquake. These earthquakes also arouse engineers to resurvey the behavior of end-plate connections. It is well known that end-plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. So it can reduce the damage, and is one of the best choices for resisting earthquake.

中文题名钢框架梁柱端板连接在循环荷载作用下的破坏机理及抗震设计对策副题名外文题名 Collapse mechanism and design criterion of steel beam-to-column end-plate connections under cyclic load 论文作者郭兵导师顾强学科专业结构工程研究领域\研究方向学位级别博士学位授予单位西安建筑科技大学学位授予日期2002 论文页码总数127页关键词钢结构框架结构抗震设计钢框架梁柱端板连接馆藏号BSLW /2003 /TU392 /6 传统观点认为，梁柱焊接刚性连接具有较好的抗震性能，因此在工程中得到了广泛地应用，但1994年的Northrige地震和1995年的阪神地震改变了这种传统观点，这两次地震也引起了工程技术人员对端板连接的再审视。

Though the gyration and retroflexion of the workbench, the welding positioner can make the welding line to an ideal position, which can improve the quality of the welded joint, reduce welder's workload. It is ideal equipment especially fit to weld the kinds of workpiece, just like the shaft, tray, canister, and so on.

焊接变位机可水平翻转角度，通过工作台的回转及翻转运动使工件上焊缝处于最理想的位置进行焊接，从而大大提高焊缝质量，减轻焊工劳动强度，尤其是适合焊接各种轴类、盘类、筒体等回转工件的理想设备。

The main products are hot dip galvanized, electric galvanized, PVC coating, IMPREGNATION, change out the type of welded wire mesh, etc., as well as the framework, chain link fence, double ring, bilateral, the Netherlands, suc h as barbed wire fencing wire mesh gill nets.

主要产品有热镀锌、电镀锌、PVC涂塑、浸塑、改拔等电焊网类型以及框架、勾花、双圈、双边、荷兰、刺绳刺网等护栏网。

Is a professional manufacturer of fencing and safety welded mesh, razor ***** company located in Anping County which is known as the basket of wire mesh in China.

是一家专业生产围栏和安全电焊网，剃刀*****公司位于安平县称为篮子的网中。

For enhancement of length-cutting accuracy and consistent operation of the on-line flying sawer, a new PLC-DDC-D control system of flying sawer for the straight-welded pipe production line has been developed on the basis of studies of relevant flying sawer control systems developed both at home and abroad.

为了提高飞锯在线动态定尺锯切精度、保持良好的工作稳定性，在研究了国内外飞锯控制系统的基础上提出了新型的 PLC-DDC-D直缝焊管飞锯控制系统的设计。

This paper presents rigidity separating technique after heat treatment of the bottom of welded steel dynamic tube and indicates the problem of using sclerometer and the advantage of metal material separation for forgings surface rigidity testing.

摘 要：为了检测焊接钢质药筒热处理后的物理性能，保证药筒射击后能顺利退壳，介绍了焊接钢质药筒筒底热处理后的硬度分选技术，指出了采用硬度计所存在的问题和金属材料分选仪在检测锻件表面硬度时的优势。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。