The contractor shall retighten the nuts one week after joint installation and a second time just before final lining and leveling of the track.
承包商应于接头安装后一周重新拧紧螺母，并就在轨道最终衬砌和整平前再一次拧紧。
The shoes heel uneven juncture, ruffled place too thick for leveling processing makes shoes, shoe the mouth ruffled or joint smoothly artistic.
对鞋后跟凹凸不平的接缝，折边处太厚进行整平处理使鞋口、鞋面的折边或接合处平整美观。
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