Electron beam welding has significant keyhole effect, it induces the electron beam welding different from general melting, and also important influence on its welding stresses and distortion.
电子束焊接具有显著的小孔效应，这一特点决定着电子束焊接过程和普通熔化焊不同，并对其焊接应力和变形产生重要影响。
The gravitational keyhole they mention is a precise region in space, only slightly larger than the asteroid itself, in which the effect of Earth's gravity is such that it could tweak Apophis' path.
他们提到的引力关键点是天文上的一个精确地带，仅仅微大于小行星本身，在那个点上地球引力的影响可以改变小行星运行的轨迹。
Objective To evaluate the technique and effect of supraorbital keyhole approach for removing tuberculum sellae meningiomas.
目的评价眶上匙孔入路切除小型鞍结节脑膜瘤的技术和效果。
Conclusion Trans-supraorbital keyhole approach microsurgery for treatment of large and huge tumors in the sellar region can provide stable curative effect with less complication.
结论采用锁孔显微手术能够切除鞍区大型、巨大型肿瘤，效果良好，并发症少。
Objective To explore the curative effect and indication of treating huge intracranial meningioma in the frontal skull with keyhole operation.
目的探讨应用神经外科锁孔手术治疗前颅底脑膜瘤的疗效和适应证。
Objective: To discuss the surgery way, "keyhole" minimal invasive surgery(MIS), in young children with inguinal hernia, to observe the effect and appraises its clinical application and generalization.
前言： 目的：探讨儿童腹股沟疝手术方式的改进——“匙孔”微创法，观察其治疗效果及评估其临床应用推广价值。
Objective: To study the curative effect with endoscope-assisted neurosurgery keyhole operation on hypertensive intracerebral hemorrhage (HICH).
目的：探讨神经内窥镜下锁孔手术治疗高血压脑出血的疗效。
Objective: To study the curative effect with endoscope-assisted neurosurgery keyhole operation on hypertensive intracerebral hemorrhage (HICH).
目的：探讨神经内窥镜下锁孔手术治疗高血压脑出血的疗效。
应用推荐