The inner stresses of the tubes and pipe arrangement stresses are the secondary cause, which accelerated the explosion procedure.
管子内压应力与管系应力加速了爆漏过程，是造成过热器管撕裂爆口的次要原因。
The pipe, which can be dropped from 40, 000 feet and tracked for 200 miles, makes a whoosh on its descent, reminding me of the sound of those old pneumatic tubes in department stores.
纸板管被从40 000英尺高空投下，可跟踪200英里，它嗖嗖地飞速移动，让我想起了百货商店里老旧气压管道的声音。
Especially for tubular thread processing, such as pipe fittings, bicycle, motorcycle parts, heat pipes, tubes and other dental rolling processing.
特别适用于中空管状螺纹加工，如油管接头、自行车、汽机车零件、散热管、牙管等滚牙加工。
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