咬边

1991 The technique design plan machinator and maker of the first gas-tight fumigation double profiling silo of China in Tianjin Xizhan Grain Depot.

1991年天津西站粮库中国第一座熏蒸式螺旋边钢板仓技术设计方案策划者、制定人。

The purpose of prebending process of longitudinal submerged arc welding pipe production line is introduced;character of roller prebending and mould press type prebending is analyzed.

对螺旋埋弧焊钢管在程中边的原因分析,提出针对这些原因应采取的相应措施。