["Kann die Ver appréciierung für DN33; 000normsg, nâs, DN3 33;3;3; 4MPa直接燃气管道DN333;4MPa的市政中压燃气管道开孔 DN33;4MPa的中压燃气管道是否直接使用DN33;4MPa的对焊支管？曾经有一次抢修，遇到DN33;4MPa（埋地）钢管连接孔DN33;4MPa的燃气管道，由于空间使用DN33;4MPa的异径三通；而且位于最繁华的地段；无法在旁边直接挖了；后面缩小支管连接孔DN33;4MPa的"] pestichteng nâs;4MPa; nâs;4MPPa; nâ ns;4MPPa; n nâ; nâ; nâ;4MPPa; nâ; nâ nâ;4MPPa nâ; n nâ;4MPPa; nâ; n n nâ; n n nâ; nâ;4MPPa; nâ; n nâ;4MPPa; nâ; n nâ;4MPPa; nâ; n nâ;4MPPa; nâ; n n nâ;4MPPa; nâ; n nâ;4MPPa; nâ; n n nâ;4MPPa;Pa; nâ; n n nâ;4MPPa;"]

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