禁止在海床洋底及其底土安置核武器和其他大规模毁灭性武器条约缔约国第三届审查会议筹备委员会
Preparatory Committee for the Third Review Conference of the States Parties to the Treaty on the Prohibition of the Placement of Nuclear Weapons and Other Weapons of Mass Destruction on the Seabed, Ocean Floor and subsoil
以上为机器翻译结果，长、整句建议使用 人工翻译 。