Bolts and studs installed at the factorywill either have the nuts cemented on or use a second nut as a jamb(误,应为 jam) nutso that re-tightening should not be necessary.
安装在这个工厂的螺栓和螺柱或有的螺母,或使第二个螺母作为防松螺母,使得不需要再次拧紧。
Bolts and studs installed at the factorywill either have the nuts cemented on or use a second nut as a jamb(误,应为 jam) nutso that re-tightening should not be necessary.
安装在这个工厂的螺栓和螺柱或有的螺母,或使第二个螺母作为防松螺母,使得不需要再次拧紧。
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