cold weather pipelining

cold... ... cold-weather test ： 低温试验 cold-weather pipelining ： 冬季管道输油 cold-weather pipelining ： 冬季管道敷设 ...

... cold-weather lubrication 冷天润滑 cold-weather pipelining 冬季管道输油；冬季管道敷设 cold-working steel 冷作钢 ...