... piping materials管材 insulation and lagging绝缘包扎 piping insulation管系的绝缘 ...
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insulation and lagging
绝缘和滞后
以上为机器翻译结果，长、整句建议使用 人工翻译 。
After construction of the insulation lagging is completed and accepted by inspection, operating the insulated layer shall be carried out timely.
隔热层施工完毕并经检查通过后应及时铺设防水层。
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