小直径超薄壁管纵缝焊接的主要问题是烧穿，解决这个问题的关键是严格控制焊接接头的装配质量及焊接工艺。
Burn through is the main problem of longitudinal seam welding of ultra-thin tube with small diameter. Assembly of the joint and welding technology are the key to solve the problem.
采用纵剪带钢生产小口径螺旋焊管时，超声波检验经常在焊缝的一侧发现缺陷波，而X射线拍片检验却很难发现。
The defects will be found in the seam side with ultrasonic inspection but hardly found with X ray inspection as the small diameter spiral pipe production with the split strip steel.
在分析常用低噪声快速光电探测器的基础上，选择pin光电二极管来探测氦氖激光纵模脉冲。
Based on analyzing common low noise and fast photodetectors, PIN photodiode is selected to detect He-Ne laser longitudinal mode pulse.
本文的数值模拟方法对纵流式支撑结构和波纹管的推广应用具有指导意义。
The simulation results of this dissertation can provide a guide to the application of the supporting structures and corrugated pipes.
本文首次验证了纵流壳程换热器选用波纹管作为换热元件采用单元流道模型对壳程进行数值模拟的正确性，同时验证了数值模拟结果的正确性。
The correctness of using periodic unit duct model to simulate the shell-side flow and heat transfer is confirmed for the first time, when using the corrugated tube.
方法选择合适病例，采用钢丝结扎，根管治疗和牙周治疗、全冠修复等多种方法，对磨牙纵折予以保守治疗。
Methods the proper cases were selected to be ligated with wire, pulp extirpation, peridental therapy and crown repair in conservative treatment.
根据焊管生产纵剪窄钢卷的需要，设计制造的小型圆盘刀纵剪机组价廉实用。
Designed and made to meet the requirement for strip steel slitting as part of the welded tube manufacture process, the small slitter line is both cost-saving and practical.
方法100例纵裂磨牙采用先对患牙初步清理复位带环固定根管治疗后全冠修复保存患牙。
Methods100 molars with vertical fracture were cleaned and fixed by metallic ring. Then root canal treatment (RCT) were completed.
头部开枪管内的两端均为结束之前关闭帽圆柱形，纵缝法兰压在头管的两端安装。
The head tube contains shot and the ends thereof are closed by end caps having cylindrical, longitudinally-slotted flanges press-fitted in the ends of the head tube.
单管型脊髓纵裂脊髓损害轻，不需手术探查。
The spinal cord is damaged slightly in single-tube diastematomyelia and surgery is not indicated.
单管型脊髓纵裂脊髓损害轻，不需手术探查。
The spinal cord is damaged slightly in single-tube diastematomyelia and surgery is not indicated.
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