查询词典 thread

On the base of keeping the same law of motion of original thread-taking-up pole of computerized embroidery machine and relevant sizes,the disc cam with pushing bar of roller of linear motion along the axis with the spring force closure is used to design a new thread-taking-up mechanism .

以电脑刺绣机为研究对象，根据刺绣机的面线消耗量和刺绣的可缝性，分析了挑线机构的设计要求；利用五次多项式曲线对挑线凸轮进行了设计；并根据刺绣机的特殊要求，提出了刺绣机最优化设计方法。

On the base of keeping the same law of motion of original thread-taking-up pole of computerized embroidery machine and relevant sizes,the disc cam with pushing bar of roller of linear motion along the axis with the spring force closure is used to design a new thread-taking-up mechanism .

保持原有电脑刺绣机挑线杆运动规律和相关尺寸不变，采用对心直动滚子推杆盘形凸轮机构，辅以弹簧力进行锁合，对原挑线机构进行了创新设计

The results show that using double insurance processthe hardness of thread area of bevel driving pinion can fully meet the need of technology requirement of the product with stable qualitybut its production costs is higherand that using induction annealingthe hardness of thread area can also meet the require...

结果表明：采用双重保险工艺处理的主动圆锥齿轮尾部螺纹硬度完全可以达到产品技术要求，质量稳定可靠，但成本较高；采用感应退火工艺，尾部螺纹硬度可以达到技术要求，其特点是节能、生产效率高，但需要定期对尾部螺纹进行力学性能检测。

5A kind of stress-relief groove of box thread joint has been developped. Finite Element models of several thread joints have been established by ABAQUS. The Morrow Strain-life Model is used to evaluate the fatigue life of 3 kinds of connections with different stress-relieaf grooves of box. The results show that the fatigue life of box with stress-relief groove developed in the paper is the longest.

为了定量评价几种螺纹接头的疲劳寿命大小，采用Morrow应变周期模型结合有限元分析结果计算3种具有内螺纹应力减轻槽母扣的疲劳寿命，计算结果表明本文设计的内螺纹应力减轻槽能显著延长母扣的疲劳寿命。

The two threading lines could process round thread, buttress thread, premium connection, and so on.

两条车丝线可加工圆螺纹、偏梯形螺纹、特殊螺纹等。

The article indicates the characteristics of buttress thread compared with round thread and analyzes the defect caused by materials size of API and 5CT plane tube.

文章通过分析指出，偏梯形螺纹有比圆螺纹更具优势的特点，也因此在使用符合API 5CT要求的套管原料进行生产时，由于平端套管原料管子尺寸精度原因而更易产生缺陷，通过理论计算和现场实测，提出了合适的偏差范围。

While making-up with casing tongs, the recommended torque for both standard round thread casing and buttress thread casing is given in Annex A and Annex B respectively.

2.5采用套管钳上扣，标准圆螺纹套管及偏梯型螺紋套管的旋合扭矩推荐值分别见附录八、附录

Axis hook acting in concert with compensation has been adopted, and the hook points to catch thread loop at equivalence to left and right,there by reducing skip stitching and thread breakage considerably.

采用了梭轴配合补偿机构，旋梭在勾线时的左右位置均等，可防止跳线以及断线。

In order to enhance their corrosion-proof capability and improve maintainability and service life, the author makes a suggestion of reasonable selection of the coating thickness and thread fit clearance while ensuring the thread attachment strength, based on the re.

为提高飞机螺纹连接件的抗腐蚀能力，改善飞机的维修性能和提高飞机的使用寿命，本文根据镀层厚度与螺纹配合间隙的关系，结合国内外相应标准的规定，在保证螺纹连接强度的情况下，对如何合理选择镀层厚度和螺纹配合间隙来提高抗腐蚀能力的问题做了论

Study is aimed at box threads of Φ177.8mm drill collar to analyze and calculate drill collar box thread with different stress-relief grooves using finite element method, the stress concentration of thread end of 3 types of box threads is gained under same boundary condition and load.

以177.8mm钻铤母螺纹接头作为研究对象，用有限元方法对加工有不同应力减轻槽的钻铤母螺纹接头进行了分析计算，得出了3种不同母螺纹结构在相同边界条件和载荷作用下螺纹消失端的应力集中情况。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。