... 电极内缩长度 electrode setback 小孔效应 keyhole effect 小孔型等离子弧焊 keyhole-mode welding ...
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...个病变入路都有其最佳钻孔处，具惟一性，否则病变难以处理或增加组织损伤，直接决定手术的成功与否；(3)锁孔效应(keyhole effect)：从一孔可见远处较大的空间。利用颅内自然间隙以一条最小创伤手术通道可以在颅内深部获取离孔越远越大的操作空间。
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The deep-penetration laser welding based on high-power laser keyhole effect has characteristic of large depth-width ratio welding line, oxidation-resistant characteristic of material, narrow welding line and small area of welding heat influence for high speed and high efficiency.
激光焊接的焊接速度快、生产效率高。 基于大功率激光小孔效应基础上的深熔焊的焊缝深宽比大、被接焊材料不易氧化、焊缝窄、热影响区小,适用于焊接变形小的精确焊接。
参考来源 - 高强度镀锌钢激光焊接质量的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
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