查询词典 thread counter

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。

The heavy-caliber petroleum pipe line, the air conduit, the seamless steel pipe, the welded pipe, the stainless steel steel pipe (Fang Xing, moment, circle stainless steel pipe and so on), fittings, the cold rolling seamless tube, the box thread seamless steel pipe, the cold draw seamless steel pipe, the corrosion preventing special steel pipe, the compo pipe, the boiler pipe, the bushed bearing and so on conical seamless steel pipe, seamless heterogeneous steel pipe, metal corrugated pipe, industry welded pipe, carbon steel tube and so on, construct the steel pipe, the multiple-unit tube, the compound steel pipe, the wire conduit, the thread steel pipe welded steel pipe, the pot galvanize steel pipe, the electricity galvanization steel pipe, the KBG line drive pipe, the delivery pipe and so on;..

大口径输油管、输气管、无缝钢管、焊管、不锈钢钢管（方型、矩型、圆型不锈钢管等）、锥型无缝钢管、无缝异型钢管、金属波纹管、工业焊接管、碳钢管等配件、冷轧无缝管、内螺纹无缝钢管、冷拔无缝钢管、防腐蚀特种钢管、合金管、锅炉管、轴承管等、建筑钢管、复合管、复合钢管、导线管、螺纹钢管焊接钢管、热镀锌钢管、电镀锌钢管、KBG线路导管、供水管等；。。

The thread connection of big-diameter reinforce bar adopts LBG-40 straight thread screw rolling machine of the reinforced bar.

通过采用滚压设备LBG-40型钢筋直螺纹滚丝机，进行粗直径钢筋螺纹连接，克服大直径钢筋闪光对焊接头质量不易保证的弊端。

The host produces: The wedge type gate valve, the bright pole coal gas gate valve, the gate valve, the electrodynamic balance-like double damper plate gate valve, the box thread gate valve, the bright pole underground gate valve, the electrically operated dark pole wedge type gate valve, seals the gate valve, the knife gate valve, the cut-off valve, the box thread cut-off valve (Japanese-style, Soviet type), to turn on lathe softly opens the type check valve, to risefall the check valve, the noise elimination check valve, to clamp the small dish shape check valve, the vertical check valve, to stand lies the dual purpose check valve, the small dish shape by-pass valve, the by-pass valve, the stopcock, the Three Contacts stopcock, the plunger valve, the ball valve, the flange reed valve.

主产：楔式闸阀、明杆煤气闸阀、闸阀、电动平衡式双闸板闸阀、内螺纹闸阀、明杆地下闸阀、电动暗杆楔式闸阀、软密封闸阀、刀型闸阀、截止阀、内螺纹截止阀、旋启式止回阀、升降止回阀、消声止回阀、对夹碟形止回阀、立式止回阀、立卧两用止回阀、碟形平衡阀、平衡阀、旋塞阀、三通旋塞阀、柱塞阀、球阀、法兰蝶阀。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。