During the cold seasons, outdoor compressed air of liquid water will freeze pipeline, cause blockage or burst pipe.
在寒冷的季节中，室外压缩空气管线中的液体水会冻结，引起管道堵塞或爆裂。
The cast iron pipe is used for water supply, drainage and gas transmission pipeline.
铸铁管用于给水、排水和煤气输送管线，它包括铸铁直管和管件。
The leakage current must be returned to the source, it will flow through any available thermocouple conductor, line pipe, pipeline, water or earth went to the source.
漏泄电流必需前往至源极，它将流经任何热电偶可用的导体、线管、管道、水或大地前往到源极。
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