spring pin
in a concurrent manner; at the same time
plural of nigger nose
In locomotives, an iron rod fitted between the springs and the axle boxes, to sustain and regulate the pressure on the axles.
plural of Premonstrant
出発前に整備士は、ばねと軸箱の間に取り付けられ、軸への圧力を支え調整する鉄製の棒に摩耗がないか注意深く点検した。
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