螺纹

The allowable processing length of the wooden sticks is 60mm to 1800mm, the allowable diameter is 15mm to 120mm and the length and diameter can be customized according to the requirements of the customers. For instance, we can deal with the drilling, processing of the round wood, American-style screw thread and Italian-style screw thread to meet the different demands by the customers.

木柄类产品可加工的长度是60 MM-1800 MM ，可加工的直径是15 MM-120 MM，长度和直径都可以根据客户的要求定做，例如钻孔、加工圆头、美式螺纹、意大利式螺纹等，满足客户的众多需求。

An atomatic modeling program is developed to establish the parameterized finite element model of such joints with damaged teed, the elastoplastic contact characteristics and stress-strain of threaded tubing joists are analyzed by the software of ANSYS.

开发了存在螺牙损伤的油管螺纹接头参数化有限元自动建模程序，应用ANSYS软件对缺牙油管螺纹接头进行了弹塑性接触特性及应力应变分析。

The utility model comprises a pair of two-section rod, a pair of three-section rod, the dismountable gun head, cutter head, sword head and fork head, etc. Mutual connected and dismountable screw threads are arranged between every two sections of the rod, and the screw threads on the rod end are also arranged on the attachments such as a gun head, a cutter head, a sword head and a fork head.

该实用新型包括一个对两节杆，一对三节棒， dismountable炮头，刀头，剑头和叉头，等互相连接，并dismountable螺纹均安排之间每两节的棒，以及螺纹对杆端也安排实习，例如一炮头，刀头，剑头和一个叉子头。

The headstock uses standard spindle, it support from the first kind tapping explorator organization to tap and use it to guarantee screwed hole location accuracy.

主轴箱采用标准主轴，借助第一类攻丝靠模机构对其进行螺纹加工从而保证螺纹孔的位置精度。

Adopting whorl driving can change circular movement to linal movement, and the automatic-locking function can ensure the using security, we develop the structure, analyze the principle, make necessary mechanics analyses, push over the formula, and make it clear that the jack is logical in structure, smart in power knighthead, durable in use, and with a big proportion of output and input.

利用蜗杆传动、螺纹传动，将转动变换为直线运动、将转矩转换为和向力；同时利用螺纹传动的自锁作用，保证使用安全可靠。结果设计出了多功能千斤顶的主要结构，分析了其工作原理，进行了必要的力学分析，推导出数据计算的有关公式等。

the screw thread is used widely in machine manufacturing, so to turn it is one compulsory practical problem of the latheman specialty in the vocational school.

螺纹在机器制造业中应用广泛，因而螺纹的车削是职业学校车工专业必修的一个实习课题。

Geometric parameters mainly include the clearance between rotor and stator, the spirochetal length, the threads number of the stator, etc.

本文考察的几何参数主要有定子转子间隙、螺旋体长度和定子螺纹头数等，此外还对不同螺纹齿形的泵进行了研究。

Tapping screws may be tested using pre-threaded holes in test plates to achieve screw failures instead of thread strippage.

自攻螺钉应装入带有螺纹孔的试验圆板上拧至螺钉损坏，而不是在螺纹测试条上进行。

One of the tubular elements (11, 12) comprises an unthreaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealed contact with the opposite surface (41; 8) of the other element after the first and second tubular elements have been screwed, have expanded and generated elastic return forces.

其中二个管形零件(11；12)包括一个延伸在它的螺纹部分和它的自由端之间并且具有一个密封表面(40；7)的无螺纹凸缘(38；5)，这个密封表面(40；7)在旋拧、直径膨胀以及然后产生第一和第二管形零件的弹性恢复力后与另一个零件的相对表面(41；8)密封接触。

In the paper,on the basis of analysizing the effects of preventing the looseness of vertical nuts, the author points out that in reality, vertical nuts can't control precompact forces,nor can enhance the strength of thread joining sets, and therefore can't be suitable for thread joining of key parts.

在对对顶螺母的防松效果进行力学分析的基础上，指出在实际操作中，对顶螺母不能有效地控制预紧力，也不能提高螺纹联接的强度，因此，对顶螺母不宜用于重要部位的螺纹联接。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失