... abovegrade piping 地上配管 accommodation piping 居住舱室管系 air piping 风道; 风口 ...
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Accommodation air-condition Freon piping to be done air-tightness and vacuum test.
房舱空调氟利昂管系密性试验和真空试验。
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Accommodation air-condition freon piping to be done air-tightness test.
房舱空调氟利昂管系密性试验。
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