用于焊接螺母磁场传感器检测，不仅金属但它也取代了位置螺栓。
The magnetic field sensor for weld nuts detects not only metal but it also replaces the location bolt.
检查各部件安装位置是否移动、变形、锁紧所有螺栓，检查密封是否良好。
Check each component installation location is mobile, deformation, tighten all bolts, check the sealing is good or not.
机翼大梁上的两个位置的螺栓使用了单一an 3螺栓。
They bolt to the wing SPAR in two places using a single AN3 bolt.
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