短語(yǔ)詞組短語(yǔ)Inert gas discharge piping 惰性氣體排放管道gas exhaust piping 排氣管路Gas Stove Piping 管道燃?xì)庠?/li>gas freeing piping 驅(qū)氣管系gas -piping industry 管道燃?xì)鈽I(yè)consumer gas being piping 用戶煤氣管道consumer gas piping 用戶煤氣管道Special GAS Piping 氣體管路配置natural gas piping system 天然氣管網(wǎng) 返回 gas piping