To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.
为了克服剪钉式和反扣式两种安全接头的不足，研制出一种滑套式井下安全接头。
Take pin threads of NC50 drill collar as an example, Finite Element Method is used to analyze the different stress-relief grooves of pin thread connection.
以NC50型钻铤公螺纹作为研究对象，用有限元方法对加工有不同应力减轻槽的钻铤公螺纹接头进行了分析计算。
The new structure of a taper pin connection with external thread is introduced.
介绍了一种外端带有螺纹的圆锥销联接的新型结构。
A tip part of the lock pin is provided with a section of external thread for screwing into the high polymer material column in the lock hole of the intramedullary nail and bone cortex.
锁钉尖端部分加工一段用于旋入髓内针锁孔中高分子材料柱体和骨皮质的外螺纹。
My company has a variety of devices 198 Units, mainly the production of full-thread screw, double-headed stud, round nuts, rings, pin and so on.
我公司有各种设备198台，主要生产全螺纹螺杆、双头螺柱、圆螺母、吊环、销类等。
The rod was a bamboo pole, the hook was converted from a paper pin, the string was cotton sewing thread, the float pulled from a broom, and tooth-paste casing boiled and shaped into a plummet.
竹竿就是鱼杆，大头针就是鱼钩，缝纫机线就是钓鱼线，芒草扫帚抽一根出来切出一截就是鱼漂，而牙膏壳就烧制成铅锤。
The pin gauges are used to measure the hole distance, the pitch diameter of the thread, etc.
针规适用于机械加工中孔径、孔距、内螺纹小径的测量，特别适于弯曲槽宽及模具尺寸的测量。
Standard installation methods: screw thread, plate or pin plunge, etc.
标准安装制式：螺纹、平板、插杆等等。
Standard installation methods: screw thread, plate or pin plunge, etc.
标准安装制式：螺纹、平板、插杆等等。
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