目的总结螺纹根管钉、光固化树脂核、金属烤瓷全冠修复残根残冠的临床经验。
AimTo evaluate the clinical effect of the restoration using prefabricated screw post, light-cured composite resin core and porcelain-fused-to-metal crown for residue crown and residue root.
方法87例残根残冠经过完善的根管治疗后，用螺纹根管钉、光固化树脂核、金属烤瓷全冠进行修复。
Methods87 cases were treated with routine post-and-core PFM crowns after root canal therapy respectively.
由于每根螺杆两端螺纹的旋向相反，螺杆转动时，由螺杆啮合线形成的泵工作腔。
Because each thread rotate to the opposite on both ends of the screw, the screw rotates, formed by the screw meshing line pump working chamber.
“调模”使用油马达调模，没有过载保护功能，负载加大后，四根拉紧杆螺纹、调模螺母螺纹会损坏。
"Transfer mode" used motor oil transfer mode, there is no overload protection function, the load increased, the four tension rod threads, thread nut transfer mold damage.
的翻译是：做片断针线通过使与一根被钩的针的螺纹成环。
To make a piece of needlework by looping thread with a hooked needle.
用作握柄的是一根中空细管，清洁头是一个小小的喷头，通过带有螺纹的进水口将其与水管接通。
A grab handle is a hollow thin pipe, and a cleaning head is a small spray head which is communicated with a water pipe through a water inlet with a screw thread.
一种碳纤维与金属结合螺纹管式脚踏车架，车架是由数根支杆、衔接头及二通接头构成。
The utility model relates to a thread tube bicycle frame made of carbon fibers combined with metal, which is composed of a plurality of supporting rods, an engaging head, and a two-way joint.
一种碳纤维与金属结合螺纹管式脚踏车架，车架是由数根支杆、衔接头及二通接头构成。
The utility model relates to a thread tube bicycle frame made of carbon fibers combined with metal, which is composed of a plurality of supporting rods, an engaging head, and a two-way joint.
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